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He L, Lan Z, Yang Y, Ren Q, You JW, Sha WEI, Liang W, Yao J. Wavelength division multiplexing based on the coupling effect of helical edge states in two-dimensional dielectric photonic crystals. Opt Express 2024; 32:11259-11270. [PMID: 38570977 DOI: 10.1364/oe.518922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 03/02/2024] [Indexed: 04/05/2024]
Abstract
Photonic topological insulators with topologically protected edge states featuring one-way, robustness and backscattering-immunity possess extraordinary abilities to steer and manipulate light. In this work, we construct a topological heterostructure (TH) consisting of a domain of nontrivial pseudospin-type topological photonic crystals (PCs) sandwiched between two domains of trivial PCs based on two-dimensional all-dielectric core-shell PCs in triangle lattice. We consider three THs with different number of layers in the middle nontrivial domain (i.e., one-layer, two-layer, three-layer) and demonstrate that the projected band diagrams of the three THs host interesting topological waveguide states (TWSs) with properties of one-way, large-area, broad-bandwidth and robustness due to coupling effect of the helical edge states associated with the two domain-wall interfaces. Moreover, taking advantage of the tunable bandgap between the TWSs by the layer number of the middle domain due to the coupling effect, a topological Y-splitter with functionality of wavelength division multiplexing is explicitly demonstrated exploiting the unique feature of the dispersion curves of TWSs in the three THs. Our work not only offers a new method to realize pseudospin-polarized large-area TWSs with tunable mode-width, but also could provide new opportunities for practical applications in on-chip multifunctional (i.e., wavelength division multiplexing) photonic devices with topological protection and information processing with pseudospin-dependent transport.
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Feng W, Chittò M, Xie W, Ren Q, Liu F, Kang X, Zhao D, Li G, Moriarty TF, Wang X. Poly(d-amino acid) Nanoparticles Target Staphylococcal Growth and Biofilm Disassembly by Interfering with Peptidoglycan Synthesis. ACS Nano 2024; 18:8017-8028. [PMID: 38456817 DOI: 10.1021/acsnano.3c10983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
d-Amino acids are signals for biofilm disassembly. However, unexpected metabolic pathways severely attenuate the utilization of d-amino acids in biofilm disassembly, resulting in unsatisfactory efficiency. Herein, three-dimensional poly(d-amino acid) nanoparticles (NPs), which possess the ability to block intracellular metabolism, are constructed with the aim of disassembling the biofilms. The obtained poly(α-N-acryloyl-d-phenylalanine)-block-poly(β-N-acryloyl-d-aminoalanine NPs (denoted as FA NPs) present α-amino groups and α-carboxyl groups of d-aminoalanine on their surface, which guarantees that FA NPs can effectively insert into bacterial peptidoglycan (PG) via the mediation of PG binding protein 4 (PBP4). Subsequently, the FA NPs trigger the detachment of amyloid-like fibers that connect to the PG and reduce the number of polysaccharides and proteins in extracellular polymeric substances (EPS). Finally, FA NPs damage the structural stability of EPS and lead to the disassembly of the biofilm. Based on this feature, FA NPs significantly enhance the killing efficacy of encapsulated sitafloxacin sesquihydrate (Sita) by facilitating the penetration of Sita within the biofilm, achieving complete elimination of Staphylococcal biofilm in mice. Therefore, this study strongly demonstrates that FA NPs can effectively improve biofilm disassembly efficacy and provide great potential for bacterial biofilm infection treatment.
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Affiliation(s)
- Wenli Feng
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
- AO Research Institute Davos, Davos 7270, Switzerland
- China-Japan Friendship Hospital, Beijing 100029, People's Republic of China
| | - Marco Chittò
- AO Research Institute Davos, Davos 7270, Switzerland
| | - Wensheng Xie
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Qun Ren
- The Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biointerfaces, EMPA, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Fang Liu
- China-Japan Friendship Hospital, Beijing 100029, People's Republic of China
| | - Xiaoxu Kang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Dongdong Zhao
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Guofeng Li
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | | | - Xing Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
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Sun Q, Tao S, Bovone G, Han G, Deshmukh D, Tibbitt MW, Ren Q, Bertsch P, Siqueira G, Fischer P. Versatile Mechanically Tunable Hydrogels for Therapeutic Delivery Applications. Adv Healthc Mater 2024:e2304287. [PMID: 38488218 DOI: 10.1002/adhm.202304287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Indexed: 04/02/2024]
Abstract
Hydrogels provide a versatile platform for biomedical material fabrication that can be structurally and mechanically fine-tuned to various tissues and applications. Applications of hydrogels in biomedicine range from highly dynamic injectable hydrogels that can flow through syringe needles and maintain or recover their structure after extrusion to solid-like wound-healing patches that need to be stretchable while providing a selective physical barrier. In this study, a toolbox is designed using thermo-responsive poly(N-isopropylacrylamide) (PNIPAM) polymeric matrices and nanocelluloses as reinforcing agent to obtain biocompatible hydrogels with altering mechanical properties, from a liquid injectable to a solid-like elastic hydrogel. The liquid hydrogels possess low viscosity and shear-thinning properties at 25 °C, which allows facile injection at room temperature, while they become viscoelastic gels at body temperature. In contrast, the covalently cross-linked solid-like hydrogels exhibit enhanced viscoelasticity. The liquid hydrogels are biocompatible and are able to delay the in vitro release and maintain the bioactivity of model drugs. The antimicrobial agent loaded solid-like hydrogels are effective against typical wound-associated pathogens. This work presents a simple method of tuning hydrogel mechanical strength to easily adapt to applications in different soft tissues and broaden the potential of renewable bio-nanoparticles in hybrid biomaterials with controlled drug release capabilities.
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Affiliation(s)
- Qiyao Sun
- Department of Health Science and Technology, ETH Zurich, Zurich, 8092, Switzerland
| | - Siyuan Tao
- Laboratory for Biointerfaces, Empa, St. Gallen, 9014, Switzerland
| | - Giovanni Bovone
- Macromolecular Engineering Laboratory, D-MAVT, ETH Zurich, Zurich, 8092, Switzerland
| | - Garam Han
- Department of Health Science and Technology, ETH Zurich, Zurich, 8092, Switzerland
| | - Dhananjay Deshmukh
- Macromolecular Engineering Laboratory, D-MAVT, ETH Zurich, Zurich, 8092, Switzerland
- Institute for Mechanical Systems, D-MAVT, ETH Zurich, Zurich, 8092, Switzerland
| | - Mark W Tibbitt
- Macromolecular Engineering Laboratory, D-MAVT, ETH Zurich, Zurich, 8092, Switzerland
| | - Qun Ren
- Laboratory for Biointerfaces, Empa, St. Gallen, 9014, Switzerland
| | - Pascal Bertsch
- Drug Delivery and Biophysics of Biopharmaceuticals, Department of Pharmacy, University of Copenhagen, Copenhagen, 2100, Denmark
| | - Gilberto Siqueira
- Cellulose & Wood Materials Laboratory, EMPA, Dübendorf, 8600, Switzerland
| | - Peter Fischer
- Department of Health Science and Technology, ETH Zurich, Zurich, 8092, Switzerland
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Ren Q, Lang Y, Jia Y, Xiao X, Liu Y, Kong X, Jin R, He Y, Zhang J, You JW, Sha WEI, Pang Y. High-Q metasurface signal isolator for 1.5T surface coil magnetic resonance imaging on the go. Opt Express 2024; 32:8751-8762. [PMID: 38571125 DOI: 10.1364/oe.514806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 01/24/2024] [Indexed: 04/05/2024]
Abstract
The combination of surface coils and metamaterials remarkably enhance magnetic resonance imaging (MRI) performance for significant local staging flexibility. However, due to the coupling in between, impeded signal-to-noise ratio (SNR) and low-contrast resolution, further hamper the future growth in clinical MRI. In this paper, we propose a high-Q metasurface decoupling isolator fueled by topological LC loops for 1.5T surface coil MRI system, increasing the magnetic field up to fivefold at 63.8 MHz. We have employed a polarization conversion mechanism to effectively eliminate the coupling between the MRI metamaterial and the radio frequency (RF) surface transmitter-receiver coils. Furthermore, a high-Q metasurface isolator was achieved by taking advantage of bound states in the continuum (BIC) for extremely high-resolution MRI and spectroscopy. An equivalent physical model of the miniaturized metasurface design was put forward through LC circuit analysis. This study opens up a promising route for the easy-to-use and portable surface coil MRI scanners.
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Tang Q, Liu S, Tao C, Wang J, Zhao H, Wang G, Zhao X, Ren Q, Zhang L, Su B, Xu J, An H. A new method for vascular age estimation based on relative risk difference in vascular aging. Comput Biol Med 2024; 171:108155. [PMID: 38430740 DOI: 10.1016/j.compbiomed.2024.108155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/26/2024] [Accepted: 02/12/2024] [Indexed: 03/05/2024]
Abstract
OBJECTIVE The current models of estimating vascular age (VA) primarily rely on the regression label expressed with chronological age (CA), which does not account individual differences in vascular aging (IDVA) that are difficult to describe by CA. This may lead to inaccuracies in assessing the risk of cardiovascular disease based on VA. To address this limitation, this work aims to develop a new method for estimating VA by considering IDVA. This method will provide a more accurate assessment of cardiovascular disease risk. METHODS Relative risk difference in vascular aging (RRDVA) is proposed to replace IDVA, which is represented as the numerical difference between individual predicted age (PA) and the corresponding mean PA of healthy population. RRDVA and CA are regard as the influence factors to acquire VA. In order to acquire PA of all samples, this work takes CA as the dependent variable, and mines the two most representative indicators from arteriosclerosis data as the independent variables, to establish a regression model for obtaining PA. RESULTS The proposed VA based on RRDVA is significantly correlated with 27 indirect indicators for vascular aging evaluation. Moreover, VA is better than CA by comparing the correlation coefficients between VA, CA and 27 indirect indicators, and RRDVA greater than zero presents a higher risk of disease. CONCLUSION The proposed VA overcomes the limitation of CA in characterizing IDVA, which may help young groups with high disease risk to promote healthy behaviors.
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Affiliation(s)
- Qingfeng Tang
- School of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; The University Key Laboratory of Intelligent Perception and Computing of Anhui Province, Anqing Normal University, Anqing 246133, China; Anhui Engineering Research Center of Intelligent Perception and Elderly Care, Chuzhou University, Chuzhou 239000, China.
| | - Shiping Liu
- The University Key Laboratory of Intelligent Perception and Computing of Anhui Province, Anqing Normal University, Anqing 246133, China.
| | - Chao Tao
- The University Key Laboratory of Intelligent Perception and Computing of Anhui Province, Anqing Normal University, Anqing 246133, China.
| | - Jue Wang
- School of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Huanhuan Zhao
- Anhui Engineering Research Center of Intelligent Perception and Elderly Care, Chuzhou University, Chuzhou 239000, China; School of Computer and Information Engineering, Chuzhou University, Chuzhou 239000, China.
| | - Guangjun Wang
- The University Key Laboratory of Intelligent Perception and Computing of Anhui Province, Anqing Normal University, Anqing 246133, China.
| | - Xu Zhao
- Health Management & Physical Examination Center, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang 441021, China.
| | - Qun Ren
- Health Management & Physical Examination Center, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang 441021, China.
| | - Liangliang Zhang
- The University Key Laboratory of Intelligent Perception and Computing of Anhui Province, Anqing Normal University, Anqing 246133, China.
| | - Benyue Su
- The University Key Laboratory of Intelligent Perception and Computing of Anhui Province, Anqing Normal University, Anqing 246133, China; School of Mathematics and Computer Science, Tongling University, Tongling 244061, China.
| | - Jiatuo Xu
- School of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Hui An
- Health Management & Physical Examination Center, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang 441021, China.
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Huo B, Wei D, Huang Q, Huang S, Fan L, Li P, Qiu J, Ren Q, Wei C, Liu Y. Acquisition of a stable and transferable plasmid coharbouring hypervirulence and MDR genes with low fitness cost: Accelerating the dissemination of ST11-KL64 CR-HvKP. J Glob Antimicrob Resist 2024; 36:350-357. [PMID: 38307249 DOI: 10.1016/j.jgar.2024.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 12/12/2023] [Accepted: 01/15/2024] [Indexed: 02/04/2024] Open
Abstract
OBJECTIVES This study aimed to delineate the ability of a plasmid, pS130-4, which harboured both hypervirulence and multidrug resistance genes, to disseminate within Klebsiella pneumoniae, as well as its potential formation mechanism. METHODS We employed whole-genome sequencing to decipher the genetic architecture of pS130-4. Its capability to conjugate and transfer was assessed through a series of experiments, including plasmid stability, competitive growth, and growth curve analysis. Its expression stability was further evaluated using drug sensitivity, larval survival, and biofilm formation tests. RESULTS pS130-4 contained four intact modules typical of self-transmissible plasmids. BLAST analysis revealed a sequence identity exceeding 90% with other plasmids from a variety of hosts, suggesting its broad prevalence. Our findings indicated the plasmid's formation resulted from IS26-mediated recombination, leading us to propose a model detailing the creation of this conjugative fusion plasmid housing both blaKPC-2 and hypervirulence genes. Our conjugation experiments established that pS130-4, when present in the clinical strain S130, was self-transmissible with an estimated efficiency between 10-5 and 10-4. Remarkably, pS130-4 showcased a 90% retention rate and did not impede the growth of host bacteria. Galleria mellonella larval infection assay demonstrated that S130 had pronounced toxicity when juxtaposed with high-virulence control strain NTUH-K2044 and low-toxicity control strain ATCC700603. Furthermore, pS130-4's virulence remained intact postconjugation. CONCLUSION A fusion plasmid, encompassing both hypervirulence and multidrug resistance genes, was viable within K. pneumoniae ST11-KL64 and incurred minimal fitness costs. These insights underscored the criticality of rigorous monitoring to pre-empt the escalation and distribution of this formidable super-plasmid.
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Affiliation(s)
- Binghui Huo
- School of Public Health, Jiangxi Medical College, Nanchang University, Nanchang, PR China
| | - DanDan Wei
- Department of Clinical Microbiology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, PR China; China-Japan Friendship Jiangxi Hospital, National Regional Center for Respiratory Medicine, Nanchang city, Jiangxi, PR China
| | - QiSen Huang
- Department of Clinical Microbiology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, PR China
| | - Shanshan Huang
- Department of Clinical Microbiology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, PR China
| | - LinPing Fan
- Department of Clinical Microbiology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, PR China
| | - Ping Li
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, PR China
| | - Jiehui Qiu
- Department of Infectious Disease, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, PR China
| | - Qun Ren
- Department of Infectious Disease, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, PR China
| | - ChunPing Wei
- Department of Infectious Disease, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, PR China
| | - Yang Liu
- Department of Clinical Microbiology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, PR China; School of Public Health, Jiangxi Medical College, Nanchang University, Nanchang, PR China; China-Japan Friendship Jiangxi Hospital, National Regional Center for Respiratory Medicine, Nanchang city, Jiangxi, PR China.
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Pan F, Altenried S, Scheibler S, Ren Q. A rapid and specific antimicrobial resistance detection of Escherichia coli via magnetic nanoclusters. Nanoscale 2024; 16:3011-3023. [PMID: 38230693 DOI: 10.1039/d3nr05463b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
Drinking water contamination, often caused by bacteria, leads to substantial numbers of diarrhea deaths each year, especially in developing regions. Human urine as a source of fertilizer, when handled improperly, can contaminate drinking water. One dominant bacterial pathogen in urine is Escherichia coli, which can trigger serious waterborne/foodborne diseases. Considering the prevalence of the multi-drug resistant extended-spectrum beta-lactamase (ESBL) producing E. coli, a rapid detection method for resistance is highly desired. In this work, we developed a method for quick identification of E. coli and, at the same time, capable of removal of general bacterial pathogens from human urine. A specific peptide GRHIFWRRGGGHKVAPR, reported to have a strong affinity to E. coli, was utilized to modify the PEGylated magnetic nanoclusters, resulting in a specific capture and enrichment of E. coli from the bacteria-spiked artificial urine. Subsequently, a novel luminescent probe was applied to rapidly identify the antimicrobial resistance of the collected E. coli within 30 min. These functionalized magnetic nanoclusters demonstrate a promising prospect to rapidly detect ESBL E. coli in urine and contribute to reducing drinking water contamination.
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Affiliation(s)
- Fei Pan
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland.
| | - Stefanie Altenried
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland.
| | - Subas Scheibler
- Nanoparticle Systems Engineering Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering, ETH Zürich, Sonneggstrasse 3, 8092 Zürich, Switzerland
- Laboratory for Particles Biology Interactions, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Qun Ren
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland.
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Fang Z, Ren Q, Wang H, Cao J, Shen X, Zhang W, Wan W, Yin W, Li L, Zang B. A New Strategy for the High-Throughput Characterization of Materials' Mechanical Homogeneity Based on the Effect of Isostatic Pressing on Surface Microstrain. Materials (Basel) 2024; 17:669. [PMID: 38591504 PMCID: PMC10856066 DOI: 10.3390/ma17030669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/25/2023] [Accepted: 12/28/2023] [Indexed: 04/10/2024]
Abstract
A new strategy for the high-throughput characterization of the mechanical homogeneity of metallurgical materials is proposed. Based on the principle of hydrostatic transmission and the synergistic analysis of the composition, microstructure, defects, and surface profile of the chosen material, the microstrain characteristics and changes in surface roughness after isostatic pressing were analyzed. After isostatic pressing, two types of microstrains were produced: low microstrain (surface smoothening with decreasing roughness) and large microstrain (surface roughening with increasing roughness). Furthermore, the roughness of the roughened microregions could be further classified based on the strain degree. The phenomenon of weak-interface damage with a large microstrain (plastic deformation, cleavage fracture, and tearing near nonmetallic inclusions) indicated that the surface microstrain analysis could be a new method of high-throughput characterization for microregions with relatively poor micromechanical properties. In general, the effect of isostatic pressing on the surface microstrain of heat-resistant steel provides a promising strategy for achieving high-throughput screening and statistically characterizing microregions with poor micromechanical properties, such as microregions containing microcracks, nonmetallic inclusions, pores, and other surface defects.
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Affiliation(s)
- Zhigang Fang
- Naval Research Institute, People’s Liberation Army of China, Beijing 100072, China
| | - Qun Ren
- Beijing Advanced Innovation Center for Materials Genome Engineering, Central Iron & Steel Research Institute, Beijing 100081, China
- Beijing Key Laboratory of Metal Materials Characterization, NCS Testing Technology Co., Ltd., Beijing 100081, China
| | - Haizhou Wang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Central Iron & Steel Research Institute, Beijing 100081, China
- Beijing Key Laboratory of Metal Materials Characterization, NCS Testing Technology Co., Ltd., Beijing 100081, China
| | - Jingyi Cao
- Naval Research Institute, People’s Liberation Army of China, Beijing 100072, China
| | - Xuejing Shen
- Beijing Advanced Innovation Center for Materials Genome Engineering, Central Iron & Steel Research Institute, Beijing 100081, China
- Beijing Key Laboratory of Metal Materials Characterization, NCS Testing Technology Co., Ltd., Beijing 100081, China
| | - Wenyu Zhang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Central Iron & Steel Research Institute, Beijing 100081, China
- Beijing Key Laboratory of Metal Materials Characterization, NCS Testing Technology Co., Ltd., Beijing 100081, China
| | - Weihao Wan
- Beijing Advanced Innovation Center for Materials Genome Engineering, Central Iron & Steel Research Institute, Beijing 100081, China
- Beijing Key Laboratory of Metal Materials Characterization, NCS Testing Technology Co., Ltd., Beijing 100081, China
| | - Wenchang Yin
- Naval Research Institute, People’s Liberation Army of China, Beijing 100072, China
| | - Liang Li
- Naval Research Institute, People’s Liberation Army of China, Beijing 100072, China
| | - Bolin Zang
- Naval Research Institute, People’s Liberation Army of China, Beijing 100072, China
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Ren Q, Liu Z, Wu L, Yin G, Xie X, Kong W, Zhou J, Liu S. C/EBPβ: The structure, regulation, and its roles in inflammation-related diseases. Biomed Pharmacother 2023; 169:115938. [PMID: 38000353 DOI: 10.1016/j.biopha.2023.115938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 11/08/2023] [Accepted: 11/21/2023] [Indexed: 11/26/2023] Open
Abstract
Inflammation, a mechanism of the human body, has been implicated in many diseases. Inflammatory responses include the release of inflammatory mediators by activating various signaling pathways. CCAAT/enhancer binding protein β (C/EBPβ), a transcription factor in the C/EBP family, contains the leucine zipper (bZIP) domain. The expression of C/EBPβ is mediated at the transcriptional and post-translational levels, such as phosphorylation, acetylation, methylation, and SUMOylation. C/EBPβ has been involved in inflammatory responses by mediating several signaling pathways, such as MAPK/NF-κB and IL-6/JAK/STAT3 pathways. C/EBPβ plays an important role in the pathological development of inflammation-related diseases, such as osteoarthritis, pneumonia, hepatitis, inflammatory bowel diseases, and rheumatoid arthritis. Here, we comprehensively discuss the structure and biological effects of C/EBPβ and its role in inflammatory diseases.
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Affiliation(s)
- Qun Ren
- Department of Pharmacy, Gannan Medical University, Ganzhou 341000, China
| | - Zhaowen Liu
- Department of Pharmacy, Gannan Medical University, Ganzhou 341000, China
| | - Longhuo Wu
- Department of Pharmacy, Gannan Medical University, Ganzhou 341000, China
| | - Guoqiang Yin
- Ganzhou People's Hospital Affiliated to Nanchang University, Ganzhou 341000, China
| | - Xunlu Xie
- Department of Joint Surgery, Ganzhou People's Hospital, Ganzhou 341000, China
| | - Weihao Kong
- Department of Joint Surgery, Ganzhou People's Hospital, Ganzhou 341000, China
| | - Jianguo Zhou
- Department of Joint Surgery, Ganzhou People's Hospital, Ganzhou 341000, China
| | - Shiwei Liu
- Department of Joint Surgery, Ganzhou People's Hospital, Ganzhou 341000, China.
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Moammeri A, Chegeni MM, Sahrayi H, Ghafelehbashi R, Memarzadeh F, Mansouri A, Akbarzadeh I, Abtahi MS, Hejabi F, Ren Q. Current advances in niosomes applications for drug delivery and cancer treatment. Mater Today Bio 2023; 23:100837. [PMID: 37953758 PMCID: PMC10632535 DOI: 10.1016/j.mtbio.2023.100837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 09/21/2023] [Accepted: 10/16/2023] [Indexed: 11/14/2023] Open
Abstract
The advent of nanotechnology has led to an increased interest in nanocarriers as a drug delivery system that is efficient and safe. There have been many studies addressing nano-scale vesicular systems such as liposomes and niosome is a newer generation of vesicular nanocarriers. The niosomes provide a multilamellar carrier for lipophilic and hydrophilic bioactive substances in the self-assembled vesicle, which are composed of non-ionic surfactants in conjunction with cholesterol or other amphiphilic molecules. These non-ionic surfactant vesicles, simply known as niosomes, can be utilized in a wide variety of technological applications. As an alternative to liposomes, niosomes are considered more chemically and physically stable. The methods for preparing niosomes are more economic. Many reports have discussed niosomes in terms of their physicochemical properties and applications as drug delivery systems. As drug carriers, nano-sized niosomes expand the horizons of pharmacokinetics, decreasing toxicity, enhancing drug solvability and bioavailability. In this review, we review the components and fabrication methods of niosomes, as well as their functionalization, characterization, administration routes, and applications in cancer gene delivery, and natural product delivery. We also discuss the limitations and challenges in the development of niosomes, and provide the future perspective of niosomes.
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Affiliation(s)
- Ali Moammeri
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | | | - Hamidreza Sahrayi
- Department of Chemical and Petrochemical Engineering, Sharif University of Technology, Tehran, Iran
| | | | - Farkhondeh Memarzadeh
- Department of Chemical and Petrochemical Engineering, Sharif University of Technology, Tehran, Iran
| | - Afsoun Mansouri
- School of Pharmacy and Pharmaceutical Sciences, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Iman Akbarzadeh
- Department of Chemical and Petrochemical Engineering, Sharif University of Technology, Tehran, Iran
| | - Maryam Sadat Abtahi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Faranak Hejabi
- Department of Cell and Molecular Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
| | - Qun Ren
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, 9014, St. Gallen, Switzerland
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Liu X, Ren Q, Bai J, Kang P, Ren G, Li X, Feng X. Imaging analysis of 1 138 supernumerary teeth by using cone-beam computed tomography. Hua Xi Kou Qiang Yi Xue Za Zhi 2023; 41:671-677. [PMID: 38597032 PMCID: PMC10722453 DOI: 10.7518/hxkq.2023.2023110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 10/11/2023] [Indexed: 04/11/2024]
Abstract
OBJECTIVES This study aims to analyze and summarize the characteristics of supernumerary teeth by using cone-beam computed tomography (CBCT). METHODS A total of 718 patients with 1 138 supernumerary teeth were retrospectively collected. Age, gender, number, location, morphology, eruption status, and accompanying symptoms of the supernumerary teeth were statistically analyzed. The relationship relative to jaws, gender, and eruption status were analyzed and discussed. RESULTS The average age of the patients was 9.54±5.32 years, and the male to female ratio was 2.88∶1. About 77.02% of the patients sought medical advice during the mixed dentition period, and 50.70% had one supernumerary tooth. These supernumeraries were most commonly conical in shape, and 85.76% of them were in the incisor region, 92.09% in the upper jaw, 46.75% in inverted position, and 86.20% unerupted. Overall, 65.29% of them had fully developed roots, and 60.63% had an impact on adjacent structures. Significant differences were found in eruption status, morphology, zoning, direction, root development, and impact on adjacent structures between the supernumerary teeth located in the upper and lower jaws (P<0.05). Significant differences were also detected in gender, morphology, zoning, orientation, root development, and impact on adjacent structures between erupted and unerupted teeth (P<0.05). The incidence of supernumerary teeth in the incisor region was higher in males than that in females. Moreover, the root of supernumeraries was more completely developed in males than in females (P<0.05). CONCLUSIONS For supernumerary teeth, CBCT images can provide accurate three-dimensional radiographic data and are valuable for clinical diagnosis and treatment planning.
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Affiliation(s)
- Xiaolin Liu
- Dept. of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Hebei Medical University, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, Shijiazhuang 050017, China
| | - Qun Ren
- Dept. of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Hebei Medical University, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, Shijiazhuang 050017, China
| | - Jiuping Bai
- Dept. of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Hebei Medical University, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, Shijiazhuang 050017, China
| | - Pei Kang
- Dept. of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Hebei Medical University, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, Shijiazhuang 050017, China
| | - Guiyun Ren
- Dept. of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Hebei Medical University, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, Shijiazhuang 050017, China
| | - Xiangjun Li
- Dept. of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Hebei Medical University, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, Shijiazhuang 050017, China
| | - Xiaowei Feng
- Dept. of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Hebei Medical University, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, Shijiazhuang 050017, China
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12
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Khaleghian M, Sahrayi H, Hafezi Y, Mirshafeeyan M, Moghaddam ZS, Farasati Far B, Noorbazargan H, Mirzaie A, Ren Q. In silico design and mechanistic study of niosome-encapsulated curcumin against multidrug-resistant Staphylococcus aureus biofilms. Front Microbiol 2023; 14:1277533. [PMID: 38098658 PMCID: PMC10720333 DOI: 10.3389/fmicb.2023.1277533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 10/30/2023] [Indexed: 12/17/2023] Open
Abstract
Curcumin, an important natural component of turmeric, has been known for a long time for its antimicrobial properties. This study aimed to investigate the anti-biofilm action of the niosome-encapsulated curcumin and explore the involved anti-biofilm mechanism. In silico investigations of ADME-Tox (absorption, distribution, metabolism, excretion, and toxicity) were first performed to predict the suitability of curcumin for pharmaceutical application. Curcumin showed low toxicity but at the same time, low solubility and low stability, which, in turn, might reduce its antimicrobial activity. To overcome these intrinsic limitations, curcumin was encapsulated using a biocompatible niosome system, and an encapsulation efficiency of 97% was achieved. The synthesized curcumin-containing niosomes had a spherical morphology with an average diameter of 178 nm. The niosomal curcumin was capable of reducing multi-drug resistant (MDR) Staphylococcus aureus biofilm 2-4-fold compared with the free curcumin. The encapsulated curcumin also demonstrated no significant cytotoxicity on the human foreskin fibroblasts. To understand the interaction between curcumin and S. aureus biofilm, several biofilm-related genes were analyzed for their expression. N-acetylglucosaminyl transferase (IcaD), a protein involved in the production of polysaccharide intercellular adhesion and known to play a function in biofilm development, was found to be downregulated by niosomal curcumin and showed high binding affinity (-8.3 kcal/mol) with curcumin based on molecular docking analysis. Our study suggests that the niosome-encapsulated curcumin is a promising approach for the treatment of MDR S. aureus biofilm and can be extended to biofilms caused by other pathogens.
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Affiliation(s)
| | - Hamidreza Sahrayi
- Department of Chemical and Petrochemical Engineering, Sharif University of Technology, Tehran, Iran
| | - Yousef Hafezi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Mahshad Mirshafeeyan
- Department of Chemical and Petrochemical Engineering, Sharif University of Technology, Tehran, Iran
| | - Zahra Salehi Moghaddam
- Department of Microbial Biotechnology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Bahareh Farasati Far
- Department of Chemistry, Iran University of Science and Technology, Tehran, Iran
| | - Hassan Noorbazargan
- Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amir Mirzaie
- Department of Biology, Parand Branch, Islamic Azad University, Shahr-e Jadid-e Parand, Iran
| | - Qun Ren
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland
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13
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Meier P, Clement P, Altenried S, Reina G, Ren Q, Züst R, Enger O, Choi F, Nestle N, Deisenroth T, Neubauer P, Wick P. Quaternary ammonium-based coating of textiles is effective against bacteria and viruses with a low risk to human health. Sci Rep 2023; 13:20556. [PMID: 37996620 PMCID: PMC10667359 DOI: 10.1038/s41598-023-47707-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 11/17/2023] [Indexed: 11/25/2023] Open
Abstract
While the global healthcare system is slowly recovering from the COVID-19 pandemic, new multi-drug-resistant pathogens are emerging as the next threat. To tackle these challenges there is a need for safe and sustainable antiviral and antibacterial functionalized materials. Here we develop an 'easy-to-apply' procedure for the surface functionalization of textiles, rendering them antiviral and antibacterial and assessing the performance of these textiles. A metal-free quaternary ammonium-based coating was applied homogeneously and non-covalently to hospital curtains. Abrasion, durability testing, and aging resulted in little change in the performance of the treated textile. Additionally, qualitative and quantitative antibacterial assays on Staphylococcus aureus, Pseudomonas aeruginosa, and Acinetobacter baumanii revealed excellent antibacterial activity with a CFU reduction of 98-100% within only 4 h of exposure. The treated curtain was aged 6 months before testing. Similarly, the antiviral activity tested according to ISO-18184 with murine hepatitis virus (MHV) showed > 99% viral reduction with the functionalized curtain. Also, the released active compounds of the coating 24 ± 5 µg mL-1 revealed no acute in vitro skin toxicity (IC50: 95 µg mL-1) and skin sensitization. This study emphasizes the potential of safe and sustainable metal-free textile coatings for the rapid antiviral and antibacterial functionalization of textiles.
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Affiliation(s)
- Philipp Meier
- Particles-Biology Interactions Laboratory, Empa-Swiss Federal Laboratories for Materials Science and Technology, 9014, St. Gallen, Switzerland
| | - Pietro Clement
- Particles-Biology Interactions Laboratory, Empa-Swiss Federal Laboratories for Materials Science and Technology, 9014, St. Gallen, Switzerland
| | - Stefanie Altenried
- Biointerfaces Laboratory, Empa-Swiss Federal Laboratories for Materials Science and Technology, 9014, St. Gallen, Switzerland
| | - Giacomo Reina
- Particles-Biology Interactions Laboratory, Empa-Swiss Federal Laboratories for Materials Science and Technology, 9014, St. Gallen, Switzerland
| | - Qun Ren
- Biointerfaces Laboratory, Empa-Swiss Federal Laboratories for Materials Science and Technology, 9014, St. Gallen, Switzerland
| | - Roland Züst
- Federal Office for Civil Protection FOCP, Spiez Laboratory, 3700, Spiez, Switzerland
| | - Olivier Enger
- Technology Scouting & Incubation, BASF Schweiz AG, 4005, Basel, Switzerland
| | - Francis Choi
- BASF Corporation, 1609 Biddle Avenue, Wyandotte, MI, 48192, USA
| | - Nikolaus Nestle
- BASF SE, Carl-Bosch-Strasse 38, 67056, Ludwigshafen am Rhein, Germany
| | - Ted Deisenroth
- Formulation Research, BASF Corporation, 500 White Plains Road, Tarrytown, NY, 10591, USA
| | - Peter Neubauer
- Chair of Bioprocess Engineering, Institute of Biotechnology, TU Berlin, 13355, Berlin, Germany
| | - Peter Wick
- Particles-Biology Interactions Laboratory, Empa-Swiss Federal Laboratories for Materials Science and Technology, 9014, St. Gallen, Switzerland.
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14
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Ren Q, Qu N, Sun J, Zhou J, Liu J, Ni L, Tong X, Zhang Z, Kong X, Wen Y, Wang Y, Wang D, Luo X, Zhang S, Zheng M, Li X. KinomeMETA: meta-learning enhanced kinome-wide polypharmacology profiling. Brief Bioinform 2023; 25:bbad461. [PMID: 38113075 PMCID: PMC10729787 DOI: 10.1093/bib/bbad461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 11/08/2023] [Accepted: 11/22/2023] [Indexed: 12/21/2023] Open
Abstract
Kinase inhibitors are crucial in cancer treatment, but drug resistance and side effects hinder the development of effective drugs. To address these challenges, it is essential to analyze the polypharmacology of kinase inhibitor and identify compound with high selectivity profile. This study presents KinomeMETA, a framework for profiling the activity of small molecule kinase inhibitors across a panel of 661 kinases. By training a meta-learner based on a graph neural network and fine-tuning it to create kinase-specific learners, KinomeMETA outperforms benchmark multi-task models and other kinase profiling models. It provides higher accuracy for understudied kinases with limited known data and broader coverage of kinase types, including important mutant kinases. Case studies on the discovery of new scaffold inhibitors for membrane-associated tyrosine- and threonine-specific cdc2-inhibitory kinase and selective inhibitors for fibroblast growth factor receptors demonstrate the role of KinomeMETA in virtual screening and kinome-wide activity profiling. Overall, KinomeMETA has the potential to accelerate kinase drug discovery by more effectively exploring the kinase polypharmacology landscape.
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Affiliation(s)
- Qun Ren
- Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing 210023, China
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Ning Qu
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China
| | - Jingjing Sun
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China
| | - Jingyi Zhou
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
- Lingang Laboratory, Shanghai 200031, China
| | - Jin Liu
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Lin Ni
- Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing 210023, China
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Xiaochu Tong
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China
| | - Zimei Zhang
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Xiangtai Kong
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China
| | - Yiming Wen
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China
| | - Yitian Wang
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China
| | - Dingyan Wang
- School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, Hangzhou 330106, China
| | - Xiaomin Luo
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China
| | - Sulin Zhang
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China
| | - Mingyue Zheng
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China
- Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing 210023, China
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Xutong Li
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China
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15
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Bösch A, Macha ME, Ren Q, Kohler P, Qi W, Babouee Flury B. Resistance development in Escherichia coli to delafloxacin at pHs 6.0 and 7.3 compared to ciprofloxacin. Antimicrob Agents Chemother 2023; 67:e0162522. [PMID: 37882542 PMCID: PMC10649057 DOI: 10.1128/aac.01625-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 09/08/2023] [Indexed: 10/27/2023] Open
Abstract
Understanding the resistance mechanisms of antibiotics in the micro-environment of the infection is important to assess their clinical applicability and potentially prevent resistance development. We compared the laboratory resistance evolution of Escherichia coli to delafloxacin (DLX) compared to ciprofloxacin (CIP), the co-resistance evolution, and underlying resistance mechanisms at different pHs. Three clones from each of the eight clinical E. coli isolates were subjected to subinhibitory concentrations of DLX or CIP in parallel at either pH 7.3 or 6.0. Minimum inhibitory concentrations (MICs) were regularly tested (at respective pHs), and the antibiotic concentration was adjusted accordingly. After 30 passages, MICs were determined in the presence of the efflux pump inhibitor phenylalanine-arginine-β-naphthylamide. Whole genome sequencing of the parental isolates and their resistant derivatives (n = 54) was performed. Complementation assays were carried out for selected mutations. Quantitative PCR and efflux experiments were carried out for selected derivatives. For DLX-challenged strains, resistance to DLX evolved much slower in acidic than in neutral pH, whereas for CIP-challenged strains, the opposite was the case. Mutations in the quinolone resistance-determining region were mainly seen in CIP-challenged E. coli, whereas a multifactorial mechanism including mutations in efflux-related genes played a role in DLX resistance evolution (predominantly at pH 6.0). This work provides novel insights into the resistance mechanisms of E. coli to delafloxacin and highlights the importance of understanding micro-environmental conditions at the infection site that might affect the true clinical efficacy of antibiotics and challenges our current antibiotic susceptibility-testing paradigm.
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Affiliation(s)
- Anja Bösch
- Medical Research Center, Kantonsspital St. Gallen, St. Gallen, Switzerland
- Division of Infectious Diseases and Hospital Epidemiology, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - Magreth E. Macha
- Medical Research Center, Kantonsspital St. Gallen, St. Gallen, Switzerland
- St. Francis University College of Health and Allied Sciences, Morogoro, Tanzania
| | - Qun Ren
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland
| | - Philipp Kohler
- Division of Infectious Diseases and Hospital Epidemiology, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - Weihong Qi
- Functional Genomics Center Zurich, University of Zurich, ETH Zurich, Zurich, Switzerland
| | - Baharak Babouee Flury
- Medical Research Center, Kantonsspital St. Gallen, St. Gallen, Switzerland
- Division of Infectious Diseases and Hospital Epidemiology, Kantonsspital St. Gallen, St. Gallen, Switzerland
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16
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Li Z, Zhang S, Zuber F, Altenried S, Jaklenec A, Langer R, Ren Q. Topical application of Lactobacilli successfully eradicates Pseudomonas aeruginosa biofilms and promotes wound healing in chronic wounds. Microbes Infect 2023; 25:105176. [PMID: 37406851 DOI: 10.1016/j.micinf.2023.105176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 06/18/2023] [Accepted: 06/22/2023] [Indexed: 07/07/2023]
Abstract
Chronic wounds are difficult to treat due to the presence of biofilm which prevents wound healing. Pseudomonas aeruginosa is one of the most common pathogens found in chronic wounds and conventional treatment strategies have been ineffective in the eradication of its biofilm, without harming the surrounding healthy tissue at the same time. Here, we introduced an innovative approach applying the probiotic product Bio-K+ (containing three lactobacilli) topically as an antimicrobial and antibiofilm agent. We identified lactic acid as the main active component. While antibiotics and antiseptics such as silver-ions only demonstrated limited efficacy, Bio-K+ was able to completely eradicate mature P. aeruginosa biofilms established in an in-vitro and ex-vivo human skin model. Furthermore, it demonstrated biocompatibility in the co-culture with human dermal fibroblasts and accelerated the migration of fibroblasts in a cell migration assay promoting wound healing. To enhance clinical practicability, we introduced Bio-K+ into the hydrocolloid dressing Aquacel, achieving sustained release of lactic acid and biofilm eradication. This new treatment approach applying probiotics could represent a major improvement in the management of chronic wounds and can be extended in treating other biofilm-associated infections.
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Affiliation(s)
- Zhihao Li
- Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland.
| | - Sixuan Zhang
- Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Flavia Zuber
- Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Stefanie Altenried
- Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Ana Jaklenec
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge, MA 02139, USA
| | - Robert Langer
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge, MA 02139, USA
| | - Qun Ren
- Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland.
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17
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Qiu J, Wei D, Ma J, Liu R, Shi J, Ren Q, Wei C, Huo B, Zhu L, Xiang T, Liu Y, Cheng N. Covert dissemination of pLVPK-like virulence plasmid in ST29-K54 Klebsiella pneumoniae: emergence of low virulence phenotype strains. Front Cell Infect Microbiol 2023; 13:1194133. [PMID: 37829609 PMCID: PMC10565659 DOI: 10.3389/fcimb.2023.1194133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Accepted: 09/01/2023] [Indexed: 10/14/2023] Open
Abstract
This study aimed to explore the epidemic, clinical characteristics, and molecular and virulence attributes of Klebsiella pneumoniae serotype K54 (K54-Kp). A retrospective study was conducted on 328 strains of Klebsiella pneumoniae screened in a Chinese hospital from January 2016 to December 2019. The virulence genes and antibiotic resistance genes (ARGs) were detected by PCR, and a drug sensitivity test was adopted to detect drug resistance. Multilocus sequence typing (MLST) and PFGE were performed to determine the clonal correlation between isolates. Biofilm formation assay, serum complement-mediated killing, and Galleria mellonella infection were used to characterize the virulence potential. Our results showed that thirty strains of K54-Kp were screened from 328 strains of bacteria, with an annual detection rate of 2.29%. K54-Kp had a high resistance rate to antibiotics commonly used in the clinic, and patients with hepatobiliary diseases were prone to K54-Kp infection. MLST typing showed 10 sequence typing, mainly ST29 (11/30), which concentrated in the B2 cluster. K54-Kp primarily carried virulence genes of aerobactin, silS, allS, wcaG, wabG, and mrkD, among which the terW gene was closely related to ST29 (p<0.05). The strains infected by the bloodstream had strong biofilm formation ability (p<0.05). Most strains were sensitive to serum. Still, the virulence of pLVPK-like virulence plasmid in ST29-K54 Klebsiella pneumoniae was lower than that of ST11 type and NTUH-K2044 in the Galleria mellonella model. Therefore, these findings supply a foundation to roundly comprehend K54-Kp, and clinicians should strengthen supervision and attention.
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Affiliation(s)
- Jiehui Qiu
- Department of Infectious Disease, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Dandan Wei
- Departments of Clinical Laboratory, Medical Center of Burn Plastic and Wound Repair, The First Affiliated Hospital of Nanchang University, Nanchang, China
- National Regional Center for Respiratory Medicine, China-Japan Friendship Hospital Jiangxi Hospital, Nanchang, China
| | - Jiaxin Ma
- Department of Infectious Disease, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Ren Liu
- Department of Infectious Disease, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Jianglong Shi
- Department of Infectious Disease, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Qun Ren
- Department of Infectious Disease, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Chunping Wei
- Department of Infectious Disease, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Binghui Huo
- Departments of Clinical Laboratory, Medical Center of Burn Plastic and Wound Repair, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Lanlan Zhu
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanchang University, Nanchang University, Nanchang, China
| | - Tianxin Xiang
- Medical Center for Major Public Health Events in Jiangxi Province, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yang Liu
- Departments of Clinical Laboratory, Medical Center of Burn Plastic and Wound Repair, The First Affiliated Hospital of Nanchang University, Nanchang, China
- National Regional Center for Respiratory Medicine, China-Japan Friendship Hospital Jiangxi Hospital, Nanchang, China
- Jiangxi Medicine Academy of Nutrition and Health Management, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Na Cheng
- Medical Center for Major Public Health Events in Jiangxi Province, The First Affiliated Hospital of Nanchang University, Nanchang, China
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18
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Kummer N, Huguenin-Elie L, Zeller A, Chandorkar Y, Schoeller J, Zuber F, Ren Q, Sinha A, De France K, Fischer P, Campioni S, Nyström G. 2D foam film coating of antimicrobial lysozyme amyloid fibrils onto cellulose nanopapers. Nanoscale Adv 2023; 5:5276-5285. [PMID: 37767031 PMCID: PMC10521212 DOI: 10.1039/d3na00370a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 08/22/2023] [Indexed: 09/29/2023]
Abstract
Amyloid fibrils made from inexpensive hen egg white lysozyme (HEWL) are bio-based, bio-degradable and bio-compatible colloids with broad-spectrum antimicrobial activity, making them an attractive alternative to existing small-molecule antibiotics. Their surface activity leads to the formation of 2D foam films within a loop, similar to soap films when blowing bubbles. The stability of the foam was optimized by screening concentration and pH, which also revealed that the HEWL amyloid foams were actually stabilized by unconverted peptides unable to undergo amyloid self-assembly rather than the fibrils themselves. The 2D foam film was successfully deposited on different substrates to produce a homogenous coating layer with a thickness of roughly 30 nm. This was thick enough to shield the negative charge of dry cellulose nanopaper substrates, leading to a positively charged HEWL amyloid coating. The coating exhibited a broad-spectrum antimicrobial effect based on the interactions with the negatively charged cell walls and membranes of clinically relevant pathogens (Staphylococcus aureus, Escherichia coli and Candida albicans). The coating method presented here offers an alternative to existing techniques, such as dip and spray coating, in particular when optimized for continuous production. Based on the facile preparation and broad spectrum antimicrobial performance, we anticipate that these biohybrid materials could potentially be used in the biomedical sector as wound dressings.
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Affiliation(s)
- Nico Kummer
- Laboratory for Cellulose & Wood Materials, Empa - Swiss Federal Laboratories for Materials Science and Technology Überlandstrasse 129, 8600 Dübendorf Switzerland
- Institute of Food Nutrition and Health, ETH Zurich Schmelzbergstrasse 9 8092 Zurich Switzerland
| | - Luc Huguenin-Elie
- Laboratory for Cellulose & Wood Materials, Empa - Swiss Federal Laboratories for Materials Science and Technology Überlandstrasse 129, 8600 Dübendorf Switzerland
| | - Adrian Zeller
- Laboratory for Cellulose & Wood Materials, Empa - Swiss Federal Laboratories for Materials Science and Technology Überlandstrasse 129, 8600 Dübendorf Switzerland
| | - Yashoda Chandorkar
- Laboratory for Biointerfaces, Empa - Swiss Federal Laboratories for Materials Science and Technology Lerchenfeldstrasse 5 9014 St. Gallen Switzerland
| | - Jean Schoeller
- Laboratory for Biomimetic Membranes and Textiles, Empa - Swiss Federal Laboratories for Materials Science and Technology Lerchenfeldstrasse 5 9014 St. Gallen Switzerland
- Institute for Biomechanics, ETH Zürich Stefano-Franscini-Platz 5 8093 Zürich Switzerland
| | - Flavia Zuber
- Laboratory for Biointerfaces, Empa - Swiss Federal Laboratories for Materials Science and Technology Lerchenfeldstrasse 5 9014 St. Gallen Switzerland
| | - Qun Ren
- Laboratory for Biointerfaces, Empa - Swiss Federal Laboratories for Materials Science and Technology Lerchenfeldstrasse 5 9014 St. Gallen Switzerland
| | - Ashutosh Sinha
- Laboratory for Cellulose & Wood Materials, Empa - Swiss Federal Laboratories for Materials Science and Technology Überlandstrasse 129, 8600 Dübendorf Switzerland
- Institute of Food Nutrition and Health, ETH Zurich Schmelzbergstrasse 9 8092 Zurich Switzerland
| | - Kevin De France
- Laboratory for Cellulose & Wood Materials, Empa - Swiss Federal Laboratories for Materials Science and Technology Überlandstrasse 129, 8600 Dübendorf Switzerland
| | - Peter Fischer
- Institute of Food Nutrition and Health, ETH Zurich Schmelzbergstrasse 9 8092 Zurich Switzerland
| | - Silvia Campioni
- Laboratory for Cellulose & Wood Materials, Empa - Swiss Federal Laboratories for Materials Science and Technology Überlandstrasse 129, 8600 Dübendorf Switzerland
| | - Gustav Nyström
- Laboratory for Cellulose & Wood Materials, Empa - Swiss Federal Laboratories for Materials Science and Technology Überlandstrasse 129, 8600 Dübendorf Switzerland
- Institute of Food Nutrition and Health, ETH Zurich Schmelzbergstrasse 9 8092 Zurich Switzerland
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Zhong M, Wu Z, Chen Z, Ren Q, Zhou J. Advances in the interaction between endoplasmic reticulum stress and osteoporosis. Biomed Pharmacother 2023; 165:115134. [PMID: 37437374 DOI: 10.1016/j.biopha.2023.115134] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 07/04/2023] [Accepted: 07/07/2023] [Indexed: 07/14/2023] Open
Abstract
The endoplasmic reticulum (ER) is the main site for protein synthesis, folding, and secretion, and accumulation of the unfolded/misfolded proteins in the ER may induce ER stress. ER stress is an important participant in various intracellular signaling pathways. Prolonged- or high-intensity ER stress may induce cell apoptosis. Osteoporosis, characterized by imbalanced bone remodeling, is a global disease caused by many factors, such as ER stress. ER stress stimulates osteoblast apoptosis, increases bone loss, and promotes osteoporosis development. Many factors, such as the drug's adverse effects, metabolic disorders, calcium ion imbalance, bad habits, and aging, have been reported to activate ER stress, resulting in the pathological development of osteoporosis. Increasing evidence shows that ER stress regulates osteogenic differentiation, osteoblast activity, and osteoclast formation and function. Various therapeutic agents have been developed to counteract ER stress and thereby suppress osteoporosis development. Thus, inhibition of ER stress has become a potential target for the therapeutic management of osteoporosis. However, the in-depth understanding of ER stress in the pathogenesis of osteoporosis still needs more effort.
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Affiliation(s)
- Mingliang Zhong
- College of Rehabilitation, Gannan Medical University, Ganzhou 341000, China
| | - Zhenyu Wu
- First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China
| | - Zhixi Chen
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China
| | - Qun Ren
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China
| | - Jianguo Zhou
- Department of Joint Surgery, Ganzhou People's Hospital, Ganzhou 341000, China.
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Yuan L, Straub H, Shishaeva L, Ren Q. Microfluidics for Biofilm Studies. Annu Rev Anal Chem (Palo Alto Calif) 2023; 16:139-159. [PMID: 37314876 DOI: 10.1146/annurev-anchem-091522-103827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Biofilms are multicellular communities held together by a self-produced extracellular matrix and exhibit a set of properties that distinguish them from free-living bacteria. Biofilms are exposed to a variety of mechanical and chemical cues resulting from fluid motion and mass transport. Microfluidics provides the precise control of hydrodynamic and physicochemical microenvironments to study biofilms in general. In this review, we summarize the recent progress made in microfluidics-based biofilm research, including understanding the mechanism of bacterial adhesion and biofilm development, assessment of antifouling and antimicrobial properties, development of advanced in vitro infection models, and advancement in methods to characterize biofilms. Finally, we provide a perspective on the future direction of microfluidics-assisted biofilm research.
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Affiliation(s)
- Lu Yuan
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, China;
| | - Hervé Straub
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland;
| | - Liubov Shishaeva
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland;
| | - Qun Ren
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland;
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21
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Moghtaderi M, Bazzazan S, Sorourian G, Sorourian M, Akhavanzanjani Y, Noorbazargan H, Ren Q. Encapsulation of Thymol in Gelatin Methacryloyl (GelMa)-Based Nanoniosome Enables Enhanced Antibiofilm Activity and Wound Healing. Pharmaceutics 2023; 15:1699. [PMID: 37376147 DOI: 10.3390/pharmaceutics15061699] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 05/31/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023] Open
Abstract
Non-healing wounds impose huge cost on patients, healthcare, and society, which are further fortified by biofilm formation and antimicrobial resistance (AMR) problems. Here, Thymol, an herbal antimicrobial agent, is utilized to combat AMR. For efficient delivery of Thymol gelatin methacryloyl (GelMa), a hydrophilic polymeric hydrogel with excellent biocompatibility combined with niosome was used to encapsulate Thymol. After optimization of the niosomal Thymol (Nio-Thymol) in the company of GelMa (Nio-Thymol@GelMa) to achieve maximum entrapment efficiency, minimum size, and low polydispersity index, the Thymol release peaked at 60% and 42% from Nio-Thymol@GelMa in medium with pH values of 6.5 and 7.4 after 72 h, respectively. Furthermore, Nio-Thymol@GelMa demonstrated higher antibacterial and anti-biofilm activity than Nio-Thymol and free Thymol against both Gram-negative and Gram-positive bacteria. Interestingly, compared with other obtained formulations, Nio-Thymol@GelMa also led to greater enhancement of migration of human dermal fibroblasts in vitro, and higher upregulation of the expression of certain growth factors such as FGF-1, and matrix metalloproteinases such as MMP-2 and MMP-13. These results suggest that Nio-Thymol@GelMa can represent a potential drug preparation for Thymol to enhance the wound healing process and antibacterial efficacy.
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Affiliation(s)
- Maryam Moghtaderi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran 1417935840, Iran
| | - Saba Bazzazan
- Department of Community Medicine, Mashhad Branch, Islamic Azad University, Mashhad 1477893855, Iran
| | - Ghazal Sorourian
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran 1417935840, Iran
| | - Maral Sorourian
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran 1417935840, Iran
| | - Yasaman Akhavanzanjani
- Department of Molecular and Cellular Biology, Faculty of Advance Sciences and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran 1477893855, Iran
| | - Hassan Noorbazargan
- Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran 1517964311, Iran
| | - Qun Ren
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, 9014 St. Gallen, Switzerland
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Zhang Z, Wang G, Li R, Ni L, Zhang R, Cheng K, Ren Q, Kong X, Ni S, Tong X, Luo L, Wang D, Lu X, Zheng M, Li X. Tora3D: an autoregressive torsion angle prediction model for molecular 3D conformation generation. J Cheminform 2023; 15:57. [PMID: 37287071 DOI: 10.1186/s13321-023-00726-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 05/20/2023] [Indexed: 06/09/2023] Open
Abstract
Three-dimensional (3D) conformations of a small molecule profoundly affect its binding to the target of interest, the resulting biological effects, and its disposition in living organisms, but it is challenging to accurately characterize the conformational ensemble experimentally. Here, we proposed an autoregressive torsion angle prediction model Tora3D for molecular 3D conformer generation. Rather than directly predicting the conformations in an end-to-end way, Tora3D predicts a set of torsion angles of rotatable bonds by an interpretable autoregressive method and reconstructs the 3D conformations from them, which keeps structural validity during reconstruction. Another advancement of our method over other conformational generation methods is the ability to use energy to guide the conformation generation. In addition, we propose a new message-passing mechanism that applies the Transformer to the graph to solve the difficulty of remote message passing. Tora3D shows superior performance to prior computational models in the trade-off between accuracy and efficiency, and ensures conformational validity, accuracy, and diversity in an interpretable way. Overall, Tora3D can be used for the quick generation of diverse molecular conformations and 3D-based molecular representation, contributing to a wide range of downstream drug design tasks.
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Affiliation(s)
- Zimei Zhang
- Division of Life Science and Medicine, University of Science and Technology of China, Hefei, 230026, Anhui, China
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China
| | - Gang Wang
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China
| | - Rui Li
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China
- School of Pharmacy, China Pharmaceutical University, 639 Longmian Road, Nanjing, 211198, China
| | - Lin Ni
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China
- Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, 210023, China
| | - RunZe Zhang
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China
| | - Kaiyang Cheng
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China
- Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, 210023, China
| | - Qun Ren
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China
- Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, 210023, China
| | - Xiangtai Kong
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China
| | - Shengkun Ni
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China
| | - Xiaochu Tong
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China
| | - Li Luo
- Precision Pharmacy & Drug Development Center, Department of Pharmacy, Tangdu Hospital, Fourth Military Medical University, Xi'an, 710038, China
| | | | - Xiaojie Lu
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China
| | - Mingyue Zheng
- Division of Life Science and Medicine, University of Science and Technology of China, Hefei, 230026, Anhui, China.
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China.
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China.
- Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, 210023, China.
| | - Xutong Li
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China.
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China.
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Natsathaporn P, Herwig G, Altenried S, Ren Q, Rossi RM, Crespy D, Itel F. Functional Fiber Membranes with Antibacterial Properties for Face Masks. Adv Fiber Mater 2023; 5:1-15. [PMID: 37361107 PMCID: PMC10189208 DOI: 10.1007/s42765-023-00291-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 04/09/2023] [Indexed: 06/28/2023]
Abstract
Reusable face masks are an important alternative for minimizing costs of disposable and surgical face masks during pandemics. Often complementary to washing, a prolonged lifetime of face masks relies on the incorporation of self-cleaning materials. The development of self-cleaning face mask materials requires the presence of a durable catalyst to deactivate contaminants and microbes after long-term use without reducing filtration efficiency. Herein, we generate self-cleaning fibers by functionalizing silicone-based (polydimethylsiloxane, PDMS) fibrous membranes with a photocatalyst. Coaxial electrospinning is performed to fabricate fibers with a non-crosslinked silicone core within a supporting shell scaffold, followed by thermal crosslinking and removal of the water-soluble shell. Photocatalytic zinc oxide nanoparticles (ZnO NPs) are immobilized on the PDMS fibers by colloid-electrospinning or post-functionalization procedures. The fibers functionalized with ZnO NPs can degrade a photo-sensitive dye and display antibacterial properties against Gram-positive and Gram-negative bacteria (Escherichia coli and Staphylococcus aureus) due to the generation of reactive oxygen species upon irradiation with UV light. Furthermore, a single layer of functionalized fibrous membrane shows an air permeability in the range of 80-180 L/m2s and 65% filtration efficiency against fine particulate matter with a diameter less than 1.0 µm (PM1.0). Graphical abstract Supplementary Information The online version contains supplementary material available at 10.1007/s42765-023-00291-7.
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Affiliation(s)
- Papada Natsathaporn
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, 21210 Thailand
| | - Gordon Herwig
- Laboratory for Biomimetic Membranes and Textiles, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Stefanie Altenried
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Qun Ren
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - René M. Rossi
- Laboratory for Biomimetic Membranes and Textiles, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Daniel Crespy
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, 21210 Thailand
| | - Fabian Itel
- Laboratory for Biomimetic Membranes and Textiles, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
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Amoroso L, De France KJ, Kummer N, Ren Q, Siqueira G, Nyström G. Nanocomposites of cellulose nanofibers incorporated with carvacrol via stabilizing octenyl succinic anhydride-modified ɛ-polylysine. Int J Biol Macromol 2023; 242:124869. [PMID: 37201880 DOI: 10.1016/j.ijbiomac.2023.124869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 05/03/2023] [Accepted: 05/11/2023] [Indexed: 05/20/2023]
Abstract
Food packaging plays an extremely important role in the global food chain, allowing for products to be shipped across long distances without spoiling. However, there is an increased need to both reduce plastic waste caused by traditional single-use plastic packaging and improve the overall functionality of packaging materials to extend shelf-life even further. Herein, we investigate composite mixtures based on cellulose nanofibers and carvacrol via stabilizing octenyl-succinic anhydride-modified epsilon polylysine (MɛPL-CNF) for active food packaging applications. The effects of epsilon polylysine (εPL) concentration and modification with octenyl-succinic anhydride (OSA) and carvacrol are evaluated with respect to composites morphology, mechanical, optical, antioxidant, and antimicrobial properties. We find that both increased εPL concentration and modification with OSA and carvacrol lead to films with increased antioxidant and antimicrobial properties, albeit at the expense of reduced mechanical performance. Importantly, when sprayed onto the surface of sliced apples, MεPL-CNF-mixtures are able to successfully delay/hinder enzymatic browning, suggesting the potential of such materials for a range of active food packaging applications.
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Affiliation(s)
- Luana Amoroso
- Laboratory for Cellulose & Wood Materials, Empa - Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 DÜbendorf, Switzerland
| | - Kevin J De France
- Laboratory for Cellulose & Wood Materials, Empa - Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 DÜbendorf, Switzerland
| | - Nico Kummer
- Laboratory for Cellulose & Wood Materials, Empa - Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 DÜbendorf, Switzerland; Department of Health Science and Technology, ETH Zürich, Schmelzbergstrasse 9, 8092 Zürich, Switzerland
| | - Qun Ren
- Laboratory for Biointerfaces, Empa - Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9041 St. Gallen, Switzerland
| | - Gilberto Siqueira
- Laboratory for Cellulose & Wood Materials, Empa - Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 DÜbendorf, Switzerland.
| | - Gustav Nyström
- Laboratory for Cellulose & Wood Materials, Empa - Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 DÜbendorf, Switzerland; Department of Health Science and Technology, ETH Zürich, Schmelzbergstrasse 9, 8092 Zürich, Switzerland.
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Ahiafor M, Li Y, Zhang X, Ren Q. Transnational online education in biochemistry during and after the COVID-19 pandemic in Binzhou Medical University: challenges, strategies and outcome. BMC Med Educ 2023; 23:266. [PMID: 37081445 PMCID: PMC10115598 DOI: 10.1186/s12909-023-04263-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 04/14/2023] [Indexed: 05/03/2023]
Abstract
BACKGROUND Due to the global outbreak of the COVID-19 epidemic, schools were forced to shift teaching from face-face to online. During this period, a large number of studies on how to better carry out online teaching emerged. However, these studies were basically conducted with domestic students as teaching objects. The research on transnational online education conducted by overseas students is very limited. METHODS We first conducted a questionnaire survey on the obstacles of transnational online learning of 64 international students from our school who were staying abroad at the beginning of the fall semester of 2020, analyzed the results using the two-tailed student's t-test and changed the teaching platform accordingly and compared the results of the biochemistry exams conducted for 2018 spring class with those of 2018 fall class and the 2019 fall class, so as to verify the superiority of the DingTalk as a transnational online education platform. RESULTS The results showed that the main difficulties of overseas students in transnational online learning are poor network conditions and time difference. By using DingTalk as an online teaching platform, these difficulties were overcome. In the spring class of 2018, the results of online study students' biochemistry were significantly lower than those of students in face-face study (t-test, p = 0.01). However, after the switch to the DingTalk platform, online students' results in the 2018 fall class (t-test, p = 0.35) and the 2019 fall class (t-test, p = 0.7) were equivalent to the academic performance of face-face students. CONCLUSION Our exploration and application of DingTalk software in transnational online education successfully solved the dilemma of overseas students' online learning, and provided a feasible method to guarantee the efficacy of online teaching.
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Affiliation(s)
- Maxwell Ahiafor
- Department of Teaching and Scientific Research, School of International Studies, Shandong Province, Binzhou Medical University, 346 Guanhai Road, Laishan District, Yantai City, P.R. China
| | - Yanni Li
- Department of Teaching and Scientific Research, School of International Studies, Shandong Province, Binzhou Medical University, 346 Guanhai Road, Laishan District, Yantai City, P.R. China
| | - Xiaodan Zhang
- Department of Teaching and Scientific Research, School of International Studies, Shandong Province, Binzhou Medical University, 346 Guanhai Road, Laishan District, Yantai City, P.R. China
| | - Qun Ren
- Department of Teaching and Scientific Research, School of International Studies, Shandong Province, Binzhou Medical University, 346 Guanhai Road, Laishan District, Yantai City, P.R. China.
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Wang X, Wang X, Ren Q, Cai H, Xin J, Lang Y, Xiao X, Lan Z, You J, Sha WEI. Temperature-controlled optical switch metasurface with large local field enhancement based on FW-BIC. Front Nanotechnol 2023. [DOI: 10.3389/fnano.2023.1112100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023] Open
Abstract
Introduction: Many researchers have explored the bound states in the continuum (BICs) as a particular bound wave state which can be used to achieve a very high Q-factor. High-Q factor devices, typically based on the bound states in the continuum (BICs), are well used in the fields of hypersensitive biochemical sensors, non-linear effects enhancement, plasmon lasers, and hi-performance filtering. However, symmetrical-protected BIC is difficult to achieve experimentally high-Q factor because it strongly depends on the geometry and can be destroyed by any slight disturbance in the potential well.Methods: Therefore, we proposed a parameter-adjusted Friedrich-Wintergen BIC based on the analysis model of time-coupled model theory, where the target system parameters can be tuned to achieve high-Q excitation.Results: Moreover, considering the tunability and flexibility of the components in various practical applications, we integrate active materials into metasurface arrays with the help of external stimuli to achieve modulation of high-Q resonances. Our results demonstrate that an optical resonator based on FW-BIC can modulate the BIC state by changing the intermediate gap.Discussion: The BIC state and the high-Q factor Fano resonance can be dynamically tuned by adding temperature-sensitive VO2 material.
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Pourseif T, Ghafelehbashi R, Abdihaji M, Radan N, Kaffash E, Heydari M, Naseroleslami M, Mousavi-Niri N, Akbarzadeh I, Ren Q. Chitosan -based nanoniosome for potential wound healing applications: Synergy of controlled drug release and antibacterial activity. Int J Biol Macromol 2023; 230:123185. [PMID: 36623618 DOI: 10.1016/j.ijbiomac.2023.123185] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 12/23/2022] [Accepted: 01/04/2023] [Indexed: 01/09/2023]
Abstract
This study aims to develop a niosomal platform which can delivery drugs such as tetracycline hydrochloride (TCH) to treat bacterial infections in wounds. To this end, chitosan (CS) was used to obtain a controlled drug release and at the same time antibacterial activity. By design of experiments the niosome encapsulated TCH (TCH-Nio) were optimized for their particle size and encapsulation efficiency, followed by analysis of the release profile of TCH and stability of TCH-Nio and TCH-Nio@CS. The antibacterial activity and cytotoxicity of the fabricated nanoparticles were investigated as well. The release rate of TCH from TCH-Nio@CS in all conditions is less than TCH-Nio. In addition, higher temperature increases the release rate of drug from these formulations. The size, polydispersity index, and encapsulation efficacy of TCH-Nio and TCH-Nio@CS were more stable in 4 °C compared to 25 °C. TCH, TCH-Nio, and TCH-Nio@CS had MIC values of 7.82, 3.91, and 1.95 μg/mL for Escherichia coli, 3.91, 1.95, and 0.98 μg/mL for Pseudomonas aeruginosa, and 1.96, 0.98, and 0.49 μg/mL for Staphylococcus aureus, respectively. Coating of chitosan on niosome encapsulated TCH (TCH-Nio@CS) led to a reduced burst release of TCH from niosome (TCH-Nio), and enabled 2-fold higher antibacterial and anti-biofilm activity against the tested bacterial pathogens E. coli, P. aeruginosa and S. aureus, compared to the uncoated TCH-Nio, and 4-folder higher than the TCH solution, suggesting the synergetic effect of niosome encapsulation and chitosan coating. Moreover, the formulated niosomes displayed no in vitro toxicity toward the human foreskin fibroblast cells (HFF). Both TCH-Nio and TCH-Nio@CS were found to down-regulate the expression of certain biofilm genes, i.e., csgA, ndvB, and icaA in the tested bacteria, which might partially explain the improved antibacterial activity compared to TCH. The obtained results demonstrated that TCH-Nio@CS is capable of controlled drug release, leading to high antibacterial efficacy. The established platform of TCH-Nio@CS enlighten a clinic potential toward the treatment of bacterial infections in skin wounds, dental implants and urinary catheter.
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Affiliation(s)
- Tara Pourseif
- Department of Microbiology, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | | | - Mohammadreza Abdihaji
- Department of Biology, Center for Genomics and Bioinformatics, Indiana University, Bloomington, IN, USA
| | - Niloufar Radan
- Department of Chemical and Petrochemical Engineering, Sharif University of Technology, Tehran, Iran
| | - Ehsan Kaffash
- Department of Pharmaceutics, Mashhad University of Medical Sciences (MUMS), Mashhad, Iran; Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maryam Heydari
- Department of Cell and Molecular Biology, Faculty of Biological Science, University of Kharazmi, Tehran, Iran
| | - Maryam Naseroleslami
- Department of Cellular and Molecular Biology, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Neda Mousavi-Niri
- Department of Biotechnology, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Iman Akbarzadeh
- Department of Chemical and Petrochemical Engineering, Sharif University of Technology, Tehran, Iran.
| | - Qun Ren
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, 9014 St. Gallen, Switzerland.
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Pan F, Altenried S, Scheibler S, Anthis AHC, Ren Q. Specific capture of Pseudomonas aeruginosa for rapid detection of antimicrobial resistance in urinary tract infections. Biosens Bioelectron 2023; 222:114962. [PMID: 36495723 DOI: 10.1016/j.bios.2022.114962] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/23/2022] [Accepted: 11/26/2022] [Indexed: 11/30/2022]
Abstract
Urinary tract infections (UTIs) are among the most predominant microbial diseases, leading to substantial healthcare burdens and threatening human well-being. UTIs can become more critical when caused by Pseudomonas aeruginosa, particularly by antimicrobial-resistant types. Thereby a rapid diagnosis and identification of the antimicrobial-resistant P. aeruginosa can support and guide an efficient medication and an effective treatment toward UTIs. Herein, we designed a platform for prompt purification, and effective identification of P. aeruginosa to combat the notorious P. aeruginosa associated UTIs. A peptide (QRKLAAKLT), specifically binding to P. aeruginosa, was grafted onto PEGylated magnetic nanoclusters and enabled a successful capture and enrichment of P. aeruginosa from artificial human urine. Rapid identification of antimicrobial resistance of the enriched P. aeruginosa can be moreover accomplished within 30 min. These functionalized magnetic nanoclusters demonstrate a prominent diagnostic potential to combat P. aeruginosa associated UTIs, which can be extended to other P. aeruginosa involved infections.
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Affiliation(s)
- Fei Pan
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland.
| | - Stefanie Altenried
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
| | - Subas Scheibler
- Nanoparticle Systems Engineering Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering, ETH Zürich, Sonneggstrasse 3, 8092, Zürich, Switzerland; Laboratory for Particles Biology Interactions, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
| | - Alexandre H C Anthis
- Nanoparticle Systems Engineering Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering, ETH Zürich, Sonneggstrasse 3, 8092, Zürich, Switzerland; Laboratory for Particles Biology Interactions, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
| | - Qun Ren
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland.
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Valentin JDP, Altenried S, Varadarajan AR, Ahrens CH, Schreiber F, Webb JS, van der Mei HC, Ren Q. Identification of Potential Antimicrobial Targets of Pseudomonas aeruginosa Biofilms through a Novel Screening Approach. Microbiol Spectr 2023; 11:e0309922. [PMID: 36779712 PMCID: PMC10100978 DOI: 10.1128/spectrum.03099-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 01/15/2023] [Indexed: 02/14/2023] Open
Abstract
Pseudomonas aeruginosa is an opportunistic pathogen of considerable medical importance, owing to its pronounced antibiotic tolerance and association with cystic fibrosis and other life-threatening diseases. The aim of this study was to highlight the genes responsible for P. aeruginosa biofilm tolerance to antibiotics and thereby identify potential new targets for the development of drugs against biofilm-related infections. By developing a novel screening approach and utilizing a public P. aeruginosa transposon insertion library, several biofilm-relevant genes were identified. The Pf phage gene (PA0720) and flagellin gene (fliC) conferred biofilm-specific tolerance to gentamicin. Compared with the reference biofilms, the biofilms formed by PA0720 and fliC mutants were completely eliminated with a 4-fold-lower gentamicin concentration. Furthermore, the mreC, pprB, coxC, and PA3785 genes were demonstrated to play major roles in enhancing biofilm tolerance to gentamicin. The analysis of biofilm-relevant genes performed in this study provides important novel insights into the understanding of P. aeruginosa antibiotic tolerance, which will facilitate the detection of antibiotic resistance and the development of antibiofilm strategies against P. aeruginosa. IMPORTANCE Pseudomonas aeruginosa is an opportunistic pathogen of high medical importance and is one of the main pathogens responsible for the mortality of patients with cystic fibrosis. In addition to inherited antibiotic resistance, P. aeruginosa can form biofilms, defined as communities of microorganisms embedded in a self-produced matrix of extracellular polymeric substances adhering to each other and/or to a surface. Biofilms protect bacteria from antibiotic treatments and represent a major reason for antibiotic failure in the treatment of chronic infections caused by cystic fibrosis. Therefore, it is crucial to develop new therapeutic strategies aimed at specifically eradicating biofilms. The aim of this study was to generalize a novel screening method for biofilm research and to identify the possible genes involved in P. aeruginosa biofilm tolerance to antibiotics, both of which could improve the understanding of biofilm-related infections and allow for the identification of relevant therapeutic targets for drug development.
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Affiliation(s)
- Jules D. P. Valentin
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland
- University of Groningen and University Medical Center Groningen, Department of BioMedical Engineering, Groningen, Netherlands
| | - Stefanie Altenried
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland
| | - Adithi R. Varadarajan
- Molecular Ecology, Agroscope and Swiss Institute of Bioinformatics, Zurich, Switzerland
| | - Christian H. Ahrens
- Molecular Ecology, Agroscope and Swiss Institute of Bioinformatics, Zurich, Switzerland
| | - Frank Schreiber
- Division of Biodeterioration and Reference Organisms (4.1), Department of Materials and the Environment, Federal Institute for Materials Research and Testing (BAM), Berlin, Germany
| | - Jeremy S. Webb
- Institute for Life Sciences, University of Southampton, Southampton, United Kingdom
- National Biofilms Innovation Centre, University of Southampton, Southampton, United Kingdom
| | - Henny C. van der Mei
- University of Groningen and University Medical Center Groningen, Department of BioMedical Engineering, Groningen, Netherlands
| | - Qun Ren
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland
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Wang X, Wang X, Ren Q, Cai H, Xin J, Lang Y, Xiao X, Lan Z, You JW, Sha WEI. Polarization multiplexing multichannel high-Q terahertz sensing system. Front Nanotechnol 2023. [DOI: 10.3389/fnano.2023.1112346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023] Open
Abstract
Terahertz functional devices with high-Q factor play an important role in spectral sensing, security imaging, and wireless communication. The reported terahertz devices based on the electromagnetic induction transparency (EIT) effect cannot meet the needs of high-Q in practical applications due to the low-Q factor. Therefore, to increase the Q-factor of resonance, researchers introduced the concept of bound state in the continuum (BIC). In the quasi-BIC state, the metasurface can be excited by the incident wave and provide resonance with a high-Q factor because the condition that the resonant state of the BIC state is orthogonal is not satisfied. The split ring resonator (SRR) is one of the most representative artificial microstructures in the metasurface field, and it shows great potential in BIC. In this paper, based on the classical single-SRR array structure, we combine the large and small SRR and change the resonance mode of the inner and outer SRR by changing the outer radius of the inner SRR. The metasurface based on parameter-tuned BIC verified that the continuous modulation of parameters in a system could make a pair of resonant states strongly coupled, and the coherent cancellation of the resonant states will cause the linewidth of one of the resonant states to disappear, thus forming BIC. Compared with the single-SRR array metasurface based on symmetry-protected BIC, the dual-SRR array metasurface designed in this paper has multiple accidental BICs and realizes multichannel multiplexing of X-polarization and Y-polarization. It provides a brilliant platform for high-sensitivity optical sensor array, low threshold laser and efficient optical harmonic generation.
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Straub H, Zuber F, Eberl L, Maniura-Weber K, Ren Q. In Situ Investigation of Pseudomonas aeruginosa Biofilm Development: Interplay between Flow, Growth Medium, and Mechanical Properties of Substrate. ACS Appl Mater Interfaces 2023; 15:2781-2791. [PMID: 36601891 DOI: 10.1021/acsami.2c20693] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
To better understand the impact of biomaterial mechanical properties and growth medium on bacterial adhesion and biofilm formation under flow, we investigated the biofilm formation ability of Pseudomonas aeruginosa in different media on polydimethylsiloxane (PDMS) of different stiffness in real time using a microfluidic platform. P. aeruginosa colonization was recorded with optical microscopy and automated image analysis. The bacterial intracellular level of cyclic diguanylate (c-di-GMP), which regulates biofilm formation, was monitored using the transcription of the putative adhesin gene (cdrA) as a proxy. Contrary to the previous supposition, we revealed that PDMS material stiffness within the tested range has negligible impact on biofilm development and biofilm structures, whereas culture media not only influence the kinetics of biofilm development but also affect the biofilm morphology and structure dramatically. Interestingly, magnesium rather than previously reported calcium was identified here to play a decisive role in the formation of dense P. aeruginosa aggregates and high levels of c-di-GMP. These results demonstrate that although short-term adhesion assays bring valuable insight into bacterial and material interactions, long-term evaluations are essential to better predict overall biofilm outcome. The microfluidic system developed here presents a valuable application potential for studying biofilm development in situ. .
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Affiliation(s)
- Hervé Straub
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen CH-9014, Switzerland
- Department of Plant and Microbial Biology, University of Zürich, Zürich CH-8008, Switzerland
| | - Flavia Zuber
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen CH-9014, Switzerland
| | - Leo Eberl
- Department of Plant and Microbial Biology, University of Zürich, Zürich CH-8008, Switzerland
| | - Katharina Maniura-Weber
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen CH-9014, Switzerland
| | - Qun Ren
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen CH-9014, Switzerland
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Wang ZH, Ren Q, Liu GL, Zhou LL, Ba TH, Han XY, Ji LN. [Individualized treatment of glucokinase-maturity-onset diabetes of the young with pregnancy and analysis of glycemic variability during pregnancy: a case report]. Zhonghua Nei Ke Za Zhi 2023; 62:91-94. [PMID: 36631043 DOI: 10.3760/cma.j.cn112138-20220511-00359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Z H Wang
- Department of Endocrinology, Peking University People's Hospital, Beijing 100044, China
| | - Q Ren
- Department of Endocrinology, Peking University People's Hospital, Beijing 100044, China
| | - G L Liu
- Department of Obstetrics, Peking University People's Hospital, Beijing 100044, China
| | - L L Zhou
- Department of Endocrinology, Peking University People's Hospital, Beijing 100044, China
| | - T H Ba
- Department of Endocrinology, Peking University People's Hospital, Beijing 100044, China
| | - X Y Han
- Department of Endocrinology, Peking University People's Hospital, Beijing 100044, China
| | - L N Ji
- Department of Endocrinology, Peking University People's Hospital, Beijing 100044, China
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33
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Ren Q, Chu Z, Cheng L, Cheng H. [Characteristics and significance of outer retinal thickness changes in reticular macular disease]. Zhonghua Yan Ke Za Zhi 2022; 58:1024-1032. [PMID: 36480883 DOI: 10.3760/cma.j.cn112142-20220430-00222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Objective: To study the characteristics and significance of changes in the thickness of the outer retinal layer (ORL) outside the macula in patients with reticular macular disease (RMD). Methods: A cross-sectional study was conducted. The clinical data of patients who visited the Department of Ophthalmology of the First Affiliated Hospital of Guangzhou Medical University from February to September 2019 were retrospectively collected. Thirty-one patients with at least one eye (54 eyes in total) diagnosed with early/mid-stage age-related macular degeneration (AMD) were consecutively included in the AMD group, and 33 patients with at least one eye (64 eyes in total) showing subretinal wart-like deposits on optical coherence tomography images were consecutively included in the RMD group. Thirty-two volunteers aged between 50 to 90 years with a normal fundus in both eyes (64 eyes in total) were consecutively included in the healthy control (HC) group. Frequency domain optical coherence tomography was applied to examine and analyze the thickness features of the ORL, inner retinal layer and choroid at the macular fovea (F), 2 mm of the temporal edge (T), the nasal edge (N), the superior edge (S) and inferior edge (I) of the macular fovea in each group. The correlations of the thickness of ORL with the choroidal thickness and the blood flow density of the choriocapillaris layer in patients with RMD were also analyzed. Results: The thickness of ORL at the F, T, S and I sites in the RMD group was significantly thinner than that in the AMD and HC groups. The difference was most obvious at the F site [(90.27±8.93), (98.04±11.7) and (97.19±7.02)μm] in the RMD, AMD and HC groups, respectively; all P<0.01). In the logistic regression model with independent variables of the ORL thickness at the macular F site, gender and age, there was a significant association between the thickness of ORL at the F site and the incidence of RMD (odds ratio=0.926, P<0.05). The ORL and choroid in the eyes of patients with RMD were significantly thinner at the F site [(90.27±8.93) and (163.21±72.43) μm, respectively; both P<0.01] compared with the AMD [(98.04±11.7) and (235.34±64.15) μm, respectively] and HC [(97.19±7.02) and (240.08±62.27) μm, respectively] groups. However, the ORL and choroidal thickness did not show significant and strong linear correlations at multiple sites. In contrast, there was a significant linear correlation between the blood flow density of the choriocapillaris layer and the thickness of ORL at the F, T and S sites in patients with RMD (r=0.487, 0.722, 0.467, respectively; all P<0.05). Conclusions: The thickness of ORL outside the macula of eyes with RMD is thinner than that of healthy eyes and eyes with early/mid-stage AMD. The thinning of ORL outside the macula is related to the decrease in the blood flow density of the choriocapillaris layer in patients with RMD.
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Affiliation(s)
- Q Ren
- Department of Ophthalmology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Z Chu
- Department of Ophthalmology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - L Cheng
- Zhongshan Ophthalmic Centre, Sun Yat-sen University, State Key Laboratory of Ophthalmology, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, China
| | - H Cheng
- Department of Ophthalmology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
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34
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Liu XL, Wang Y, Ren Q, Feng XW, DI L, Li XJ. [Evaluation of the effect of repairing unilateral cleft lip nose deformity with autogenous concha cartilage]. Shanghai Kou Qiang Yi Xue 2022; 31:668-672. [PMID: 36970807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
PURPOSE To explore the effect of nasal deformity correction after unilateral cleft lip repair with autogenous concha cartilage transplantation. METHODS Thirteen patients with nasal deformity after unilateral cleft lip surgery were collected, who were treated with autogenous concha cartilage and nasal septum deviation correction at the same time. Their chin-lifting photos were taken before operation, five days, one month and six months after operation. The nasal morphology was evaluated by subjective evaluation and objective measurement, and statistical analysis was performed using SPSS 21.0 software package. RESULTS Subjective evaluation showed that there was significant difference in nasal morphology between prior to operation and 5 days postoperatively (P=0.000), but there was no significant difference between 5 days postoperatively and 1 month and 6 months postoperatively(P=0.110, 0.053). In objective measurement, there was no significant difference in the symmetry rate of nasal tip between prior to operation and 5 days, 1 month and 6 months after operation(P=0.051, 0.136, 0.204), but there was significant difference in the symmetry rate of nasal base, nasal columella, extranasal convex angle and nasal alar base inclination angle between prior to operation and 5 days postoperatively(P=0.000, 0.000, 0.000, 0.000). However, there was no significant difference in symmetry rate of the above four indexes between 5 days after operation and 1 month and 6 months after operation(P>0.05). CONCLUSIONS Autogenous concha cartilage transplantation can effectively improve the symmetry of nasal floor, columella and alar after operation, and the effect is stable half a year after operation.
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Affiliation(s)
- Xiao-Lin Liu
- Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases; Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Hebei Medical University. Shijiazhuang 050017, Hebei Province, China. E-mail:
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Huang J, Ye Y, Xiao Y, Ren Q, Zhou Q, Zhong M, Jiao L, Wu L. Geniposide ameliorates glucocorticoid-induced osteoblast apoptosis by activating autophagy. Biomed Pharmacother 2022; 155:113829. [DOI: 10.1016/j.biopha.2022.113829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 10/02/2022] [Accepted: 10/05/2022] [Indexed: 11/27/2022] Open
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36
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Guo F, Pan F, Zhang W, Liu T, Zuber F, Zhang X, Yu Y, Zhang R, Niederberger M, Ren Q. Robust Antibacterial Activity of Xanthan-Gum-Stabilized and Patterned CeO 2-x-TiO 2 Antifog Films. ACS Appl Mater Interfaces 2022; 14:44158-44172. [PMID: 36150021 DOI: 10.1021/acsami.2c11968] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Increased occurrence of antimicrobial resistance leads to a huge burden on patients, the healthcare system, and society worldwide. Developing antimicrobial materials through doping rare-earth elements is a new strategy to overcome this challenge. To this end, we design antibacterial films containing CeO2-x-TiO2, xanthan gum, poly(acrylic acid), and hyaluronic acid. CeO2-x-TiO2 inks are additionally integrated into a hexagonal grid for prominent transparency. Such design yields not only an antibacterial efficacy of ∼100% toward Staphylococcus aureus and Escherichia coli but also excellent antifog performance for 72 h in a 100% humidity atmosphere. Moreover, FluidFM is employed to understand the interaction in-depth between bacteria and materials. We further reveal that reactive oxygen species (ROS) are crucial for the bactericidal activity of E. coli through fluorescent spectroscopic analysis and SEM imaging. We meanwhile confirm that Ce3+ ions are involved in the stripping phosphate groups, damaging the cell membrane of S. aureus. Therefore, the hexagonal mesh and xanthan-gum cross-linking chains act as a reservoir for ROS and Ce3+ ions, realizing a long-lasting antibacterial function. We hence develop an antibacterial and antifog dual-functional material that has the potential for a broad application in display devices, medical devices, food packaging, and wearable electronics.
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Affiliation(s)
- Fangwei Guo
- Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
- Shanghai Key Laboratory of Spacecraft Mechanism, Shanghai 201108, China
- Laboratory for Multifunctional Materials, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
| | - Fei Pan
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Wenchen Zhang
- Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Tian Liu
- Shanghai Key Laboratory of Spacecraft Mechanism, Shanghai 201108, China
| | - Flavia Zuber
- Laboratory for Multifunctional Materials, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
| | - Xing Zhang
- Shanghai Institute of Aerospace System Engineering, Shanghai 201108, China
| | - Yali Yu
- Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ruiji Zhang
- Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Markus Niederberger
- Laboratory for Multifunctional Materials, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
| | - Qun Ren
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
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Ouyang J, Xiao Y, Ren Q, Huang J, Zhou Q, Zhang S, Li L, Shi W, Chen Z, Wu L. 7-Ketocholesterol Induces Oxiapoptophagy and Inhibits Osteogenic Differentiation in MC3T3-E1 Cells. Cells 2022; 11:cells11182882. [PMID: 36139457 PMCID: PMC9496706 DOI: 10.3390/cells11182882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 08/26/2022] [Accepted: 09/14/2022] [Indexed: 01/16/2023] Open
Abstract
7-Ketocholesterol (7KC) is one of the oxysterols produced by the auto-oxidation of cholesterol during the dysregulation of cholesterol metabolism which has been implicated in the pathological development of osteoporosis (OP). Oxiapoptophagy involving oxidative stress, autophagy, and apoptosis can be induced by 7KC. However, whether 7KC produces negative effects on MC3T3-E1 cells by stimulating oxiapoptophagy is still unclear. In the current study, 7KC was found to significantly decrease the cell viability of MC3T3-E1 cells in a concentration-dependent manner. In addition, 7KC decreased ALP staining and mineralization and down-regulated the protein expression of OPN and RUNX2, inhibiting osteogenic differentiation. 7KC significantly stimulated oxidation and induced autophagy and apoptosis in the cultured MC3T3-E1 cells. Pretreatment with the anti-oxidant acetylcysteine (NAC) could effectively decrease NOX4 and MDA production, enhance SOD activity, ameliorate the expression of autophagy-related factors, decrease apoptotic protein expression, and increase ALP, OPN, and RUNX2 expression, compromising 7KC-induced oxiapoptophagy and osteogenic differentiation inhibition in MC3T3-E1 cells. In summary, 7KC may induce oxiapoptophagy and inhibit osteogenic differentiation in the pathological development of OP.
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Affiliation(s)
- Jing Ouyang
- College of Rehabilitation, Gannan Medical University, Ganzhou 341000, China
| | - Yaosheng Xiao
- Department of Orthopedics, First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China
| | - Qun Ren
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China
| | - Jishang Huang
- Department of Orthopedics, First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China
| | - Qingluo Zhou
- Department of Orthopedics, First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China
| | - Shanshan Zhang
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China
| | - Linfu Li
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China
| | - Weimei Shi
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China
| | - Zhixi Chen
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China
| | - Longhuo Wu
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China
- Correspondence:
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Tong X, Wang D, Ding X, Tan X, Ren Q, Chen G, Rong Y, Xu T, Huang J, Jiang H, Zheng M, Li X. Blood-brain barrier penetration prediction enhanced by uncertainty estimation. J Cheminform 2022; 14:44. [PMID: 35799215 PMCID: PMC9264551 DOI: 10.1186/s13321-022-00619-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 05/28/2022] [Indexed: 01/01/2023] Open
Abstract
Blood–brain barrier is a pivotal factor to be considered in the process of central nervous system (CNS) drug development, and it is of great significance to rapidly explore the blood–brain barrier permeability (BBBp) of compounds in silico in early drug discovery process. Here, we focus on whether and how uncertainty estimation methods improve in silico BBBp models. We briefly surveyed the current state of in silico BBBp prediction and uncertainty estimation methods of deep learning models, and curated an independent dataset to determine the reliability of the state-of-the-art algorithms. The results exhibit that, despite the comparable performance on BBBp prediction between graph neural networks-based deep learning models and conventional physicochemical-based machine learning models, the GROVER-BBBp model shows greatly improvement when using uncertainty estimations. In particular, the strategy combined Entropy and MC-dropout can increase the accuracy of distinguishing BBB + from BBB − to above 99% by extracting predictions with high confidence level (uncertainty score < 0.1). Case studies on preclinical/clinical drugs for Alzheimer’ s disease and marketed antitumor drugs that verified by literature proved the application value of uncertainty estimation enhanced BBBp prediction model, that may facilitate the drug discovery in the field of CNS diseases and metastatic brain tumors.
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Affiliation(s)
- Xiaochu Tong
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China.,University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
| | - Dingyan Wang
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China.,University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
| | - Xiaoyu Ding
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China.,University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
| | - Xiaoqin Tan
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China.,University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
| | - Qun Ren
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China.,Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, 210023, China
| | - Geng Chen
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China.,University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China.,School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, UCAS, Hangzhou, 310024, China
| | - Yu Rong
- Tencent AI Lab, Shenzhen, 518057, China
| | | | | | - Hualiang Jiang
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China.,University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
| | - Mingyue Zheng
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China. .,University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China.
| | - Xutong Li
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China. .,University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China.
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Xiao Y, Ren Q, Wu L. The pharmacokinetic property and pharmacological activity of acteoside: A review. Biomed Pharmacother 2022; 153:113296. [PMID: 35724511 PMCID: PMC9212779 DOI: 10.1016/j.biopha.2022.113296] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/06/2022] [Accepted: 06/13/2022] [Indexed: 11/09/2022] Open
Abstract
Acteoside (AC), a phenylpropanoid glycoside isolated from many dicotyledonous plants, has been demonstrated various pharmacological activities, including anti-oxidation, anti-inflammation, anti-cancer, neuroprotection, cardiovascular protection, anti-diabetes, bone and cartilage protection, hepatoprotection, and anti-microorganism. However, AC has a poor bioavailability, which can be potentially improved by different strategies. The health-promoting characteristics of AC can be attributed to its mediation in many signaling pathways, such as MAPK, NF-κB, PI3K/AKT, TGFβ/Smad, and AMPK/mTOR. Interestingly, docking simulation study indicates that AC can be an effective candidate to inhibit the activity of SARS-CoV2 main protease and protect against COVID-19. Many clinical trials for AC have been investigated, and it shows great potentials in drug development.
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Affiliation(s)
- Yaosheng Xiao
- Department of Orthopaetics, First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China
| | - Qun Ren
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China
| | - Longhuo Wu
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China.
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Xiao Y, Ren Q, Zheng Y, Zhang S, Ouyang J, Jiao L, Tang C, Li L, Shi W, Wang M, Zhang S, Zhang D, Zhong B, Peng F, Chen Z, Wu L. Geniposide ameliorated dexamethasone-induced endoplasmic reticulum stress and mitochondrial apoptosis in osteoblasts. J Ethnopharmacol 2022; 291:115154. [PMID: 35240241 DOI: 10.1016/j.jep.2022.115154] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/15/2022] [Accepted: 02/24/2022] [Indexed: 06/14/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Eucommia ulmoides Oliver has been traditionally used for treatment of various diseases, including osteoporosis, knee pain, and paralysis. The extract of Eucommia ulmoides has been reported to stimulate the bone formation and suppress the bone resorption, leading to protection against osteoporosis (OP). Geniposide (GEN) has been considered as one of the effective compounds responsible for the therapeutic efficacy of Eucommia ulmoides against OP. AIM OF THE STUDY To explore whether GEN protected against dexamethasone (DEX)-induced osteoporosis (OP) by activating NRF2 expression and inhibiting endoplasmic reticulum (ER) stress. MATERIALS AND METHODS The DEX-induced rat OP models were duplicated. The pathological changes were examined by histological/immunohistochemical evaluation and micro-computed tomography (micro-CT) assessment. Apoptosis was detected by a flow cytometer. Mitochondrial Ca2+ concentrations and mitochondrial membrane potential were detected. Western blot assays were used to detect the protein expression. RESULTS GEN effectively reversed DEX-induced pathological changes of trabecular bone in rats. In addition, the DEX-increased expression of ATF4/CHOP was also ameliorated. In MC3T3-E1 cells, DEX promoted endoplasmic reticulum (ER) stress and mitochondrial apoptosis. Inhibition of ER stress abolished the induction of apoptosis by DEX. Similarly, GEN significantly ameliorated DEX-induced mitochondrial apoptosis. The possible underlying mechanism might be associated with the pharmacological effects of GEN on activating the expression of NRF2 and alleviating ER stress in DEX-treated MC3T3-E1 cells. CONCLUSION GEN ameliorated DEX-induced ER stress and mitochondrial apoptosis in osteoblasts.
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Affiliation(s)
- Yaosheng Xiao
- Department of Orthopaedics, First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, China
| | - Qun Ren
- College of Pharmacy, Gannan Medical University, Ganzhou, 341000, China
| | - Yizhou Zheng
- College of Pharmacy, Gannan Medical University, Ganzhou, 341000, China
| | - Shanshan Zhang
- College of Pharmacy, Gannan Medical University, Ganzhou, 341000, China
| | - Jing Ouyang
- College of Rehabilitation, Gannan Medical University, Ganzhou, 341000, China
| | - Linhui Jiao
- College of Pharmacy, Gannan Medical University, Ganzhou, 341000, China
| | - Chunfang Tang
- Department of Orthopaedics, First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, China
| | - Linfu Li
- College of Pharmacy, Gannan Medical University, Ganzhou, 341000, China
| | - Weimei Shi
- College of Pharmacy, Gannan Medical University, Ganzhou, 341000, China
| | - Miaofei Wang
- College of Pharmacy, Gannan Medical University, Ganzhou, 341000, China
| | - Sainan Zhang
- College of Pharmacy, Gannan Medical University, Ganzhou, 341000, China
| | - Di Zhang
- Department of Medical Imaging, First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, China
| | - Bin Zhong
- Department of Orthopaedics, First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, China
| | - Fang Peng
- Department of Pathology, Ganzhou People's Hospital, Ganzhou, 341000, China
| | - Zhixi Chen
- College of Pharmacy, Gannan Medical University, Ganzhou, 341000, China
| | - Longhuo Wu
- College of Pharmacy, Gannan Medical University, Ganzhou, 341000, China.
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Pan F, Giovannini G, Zhang S, Altenried S, Zuber F, Chen Q, Boesel LF, Ren Q. pH-responsive silica nanoparticles for the treatment of skin wound infections. Acta Biomater 2022; 145:172-184. [PMID: 35417797 DOI: 10.1016/j.actbio.2022.04.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 03/15/2022] [Accepted: 04/06/2022] [Indexed: 12/20/2022]
Abstract
Chronic wounds are not only a burden for patients but also challenging for clinic treatment due to biofilm formation. Here, we utilized the phenomenon that chronic wounds possess an elevated local pH of 8.9 and developed pH-sensitive silica nanoparticles (SiNPs) to achieve a targeted drug release on alkaline wounds and optimized drug utility. Chlorhexidine (CHX), a disinfectant and antiseptic, was loaded into SiNPs as the model drug. The loaded CHX displayed a release 4 - 5 fold higher at pH 8.0 and 8.5 than at pH 6.5, 7.0 and 7.4. CHX-SiNPs furthermore exhibited a distinctive antibacterial activity at pH 8.0 and 8.5 against both Gram-negative and -positive bacterial pathogens, while no cytotoxicity was found according to cell viability analysis. The CHX-SiNPs were further formulated into alginate hydrogels to allow ease of use. The antibacterial efficacy of CHX-SiNPs was then studied with artificial wounds on ex vivo human skin. Treatment with CHX-SiNPs enabled nearly a 4-lg reduction of the viable bacterial cells, and the alginate formulated CHX-SiNPs led to almost a 3-lg reduction compared to the negative controls. The obtained results demonstrated that CHX-SiNPs are capable of efficient pH-triggered drug release, leading to high antibacterial efficacy. Moreover, CHX-SiNPs enlighten clinic potential towards the treatment of chronic wound infections. STATEMENT OF SIGNIFICANCE: A platform for controlled drug release at a relatively high pH value i.e., over 8, was established by tuning the physical structures of silica nanoparticles (SiNPs). Incorporation of chlorhexidine, an antimicrobial agent, into the fabricated SiNPs allowed a distinctive inhibition of bacterial growth at alkaline pHs, but not at acidic pHs. The efficacy of the SiNPs loaded with chlorhexidine in treating wound infections was further validated by utilizing ex vivo human skin samples. The presented work demonstrates clinic potential of employing alkaline pH as a non-invasive stimulus to achieve on-demand delivery of antimicrobials through SiNPs, showcasing a valuable approach to treating bacterial infections on chronic wounds.
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Pan F, Liu M, Altenried S, Lei M, Yang J, Straub H, Schmahl WW, Maniura-Weber K, Guillaume-Gentil O, Ren Q. Uncoupling bacterial attachment on and detachment from polydimethylsiloxane surfaces through empirical and simulation studies. J Colloid Interface Sci 2022; 622:419-430. [PMID: 35525145 DOI: 10.1016/j.jcis.2022.04.084] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/10/2022] [Accepted: 04/13/2022] [Indexed: 10/18/2022]
Abstract
Bacterial infections related to medical devices can cause severe problems, whose solution requires in-depth understanding of the interactions between bacteria and surfaces. This work investigates the influence of surface physicochemistry on bacterial attachment and detachment under flow through both empirical and simulation studies. We employed polydimethylsiloxane (PDMS) substrates having different degrees of crosslinking as the model material and the extended Derjaguin - Landau - Verwey - Overbeek model as the simulation method. Experimentally, the different PDMS materials led to similar numbers of attached bacteria, which can be rationalized by the identical energy barriers simulated between bacteria and the different materials. However, different numbers of residual bacteria after detachment were observed, which was suggested by simulation that the detachment process is determined by the interfacial physicochemistry rather than the mechanical property of a material. This finding is further supported by analyzing the bacteria detachment from PDMS substrates from which non-crosslinked polymer chains had been removed: similar numbers of residual bacteria were found on the extracted PDMS substrates. The knowledge gained in this work can facilitate the projection of bacterial colonization on a given surface.
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Affiliation(s)
- Fei Pan
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Mengdi Liu
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland; Department of Earth- and Environmental Sciences, Ludwig Maximilian University of Munich, Theresienstrasse 41, 80333 Munich, Germany
| | - Stefanie Altenried
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Min Lei
- College of Textiles, Donghua University, North Renmin Road 2999, 201620 Shanghai, China
| | - Jiaxin Yang
- Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, CAS, 130022 Changchun, China
| | - Hervé Straub
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Wolfgang W Schmahl
- Department of Earth- and Environmental Sciences, Ludwig Maximilian University of Munich, Theresienstrasse 41, 80333 Munich, Germany
| | - Katharina Maniura-Weber
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Orane Guillaume-Gentil
- Institute of Microbiology, Department of Biology, ETH Zurich, Vladimir-Prelog-Weg 4, 8093 Zurich, Switzerland
| | - Qun Ren
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland.
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Kwon K, Pan J, Guo Y, Ren Q, Yang Z, Tao J, Ji F. Demirjian method and Willems method to study the dental age of adolescents in Shanghai before and after 10 years. Folia Morphol (Warsz) 2022; 82:346-358. [PMID: 35285510 DOI: 10.5603/fm.a2022.0025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 02/23/2022] [Accepted: 02/23/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND The aim of this study is to assess the validity of whether the difference in dental age between 2009 to 2011 and 2021 is affected by environmental factors such as environmental pollution, floating population, and dietary habits. Demirjian and Willems dental age estimation methods were conducted for a Han population of children aged 8 to 14 in Shanghai, China. A total of 1,259 digital panorama radiographs of children aged 8.00-14.99 was estimated. All digital panorama radiographs were estimated using the Demirjian and Willems methods. MATERIALS AND METHODS Both 2009 to 2011 and 2021 were statistically analyzed by paired t-tests. The results show that the Demirjian method overestimates 2009 to 2011 and underestimates 2021 than children's chronological age. According to the Willms method, males are overestimated and females are underestimated from 2009 to 2011, and both genders were underestimated in 2021. CONCLUSIONS In conclusion, the difference in dental age between 2009 to 2011 and 2021 was statistically significant. Factors such as environment and dietary habits have been found to be affected by dental development. However, there are disputes among some researchers about the exact factors, so it is suggested to further study the effects of environmental factors on tooth development.
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Affiliation(s)
- K Kwon
- Department of Orthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - J Pan
- Department of Orthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Y Guo
- Department of Orthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Q Ren
- Department of Orthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Z Yang
- Department of Orthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - J Tao
- Department of General Dentistry, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - F Ji
- Department of Orthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Feng W, Li G, Kang X, Wang R, Liu F, Zhao D, Li H, Bu F, Yu Y, Moriarty TF, Ren Q, Wang X. Cascade-Targeting Poly(amino acid) Nanoparticles Eliminate Intracellular Bacteria via On-Site Antibiotic Delivery. Adv Mater 2022; 34:e2109789. [PMID: 35066925 DOI: 10.1002/adma.202109789] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 01/13/2022] [Indexed: 06/14/2023]
Abstract
Intracellular bacteria in latent or dormant states tolerate high-dose antibiotics. Fighting against these opportunistic bacteria has been a long-standing challenge. Herein, the design of a cascade-targeting drug delivery system (DDS) that can sequentially target macrophages and intracellular bacteria, exhibiting on-site drug delivery, is reported. The DDS is fabricated by encapsulating rifampicin (Rif) into mannose-decorated poly(α-N-acryloyl-phenylalanine)-block-poly(β-N-acryloyl-d-aminoalanine) nanoparticles, denoted as Rif@FAM NPs. The mannose units on Rif@FAM NPs guide the initial macrophage-specific uptake and intracellular accumulation. After the uptake, the detachment of mannose in acidic phagolysosome via Schiff base cleavage exposes the d-aminoalanine moieties, which subsequently steer the NPs to escape from lysosomes and target intracellular bacteria through peptidoglycan-specific binding, as evidenced by the in situ/ex situ co-localization using confocal, flow cytometry, and transmission electron microscopy. Through the on-site Rif delivery, Rif@FAM NPs show superior in vitro and in vivo elimination efficiency than the control groups of free Rif or the DDSs lacking the macrophages- or bacteria-targeting moieties. Furthermore, Rif@FAM NPs remodel the innate immune response of the infected macrophages by upregulating M1/M2 polarization, resulting in a reinforced antibacterial capacity. Therefore, this biocompatible DDS enabling macrophages and bacteria targeting in a cascade manner provides a new outlook for the therapy of intracellular pathogen infection.
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Affiliation(s)
- Wenli Feng
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Guofeng Li
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Xiaoxu Kang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Ruibai Wang
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, P. R. China
| | - Fang Liu
- Department of Oncology of Integrative Chinese and Western Medicine, China-Japan Friendship Hospital, Beijing, 100029, P. R. China
| | - Dongdong Zhao
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Haofei Li
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Fanqiang Bu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Yingjie Yu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | | | - Qun Ren
- Empa, the Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biointerfaces, Lerchenfeldstrasse 5, St. Gallen, 9014, Switzerland
| | - Xing Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
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Ren Q, Zhou Y, Yan M, Zheng C, Zhou G, Xia X. Imaging-guided percutaneous transthoracic needle biopsy of nodules in the lung base: fluoroscopy CT versus cone-beam CT. Clin Radiol 2022; 77:e394-e399. [DOI: 10.1016/j.crad.2022.02.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Accepted: 02/02/2022] [Indexed: 01/08/2023]
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Zhou Q, Ren Q, Jiao L, Huang J, Yi J, Chen J, Lai J, Ji G, Zheng T. The potential roles of JAK/STAT signaling in the progression of osteoarthritis. Front Endocrinol (Lausanne) 2022; 13:1069057. [PMID: 36506076 PMCID: PMC9729341 DOI: 10.3389/fendo.2022.1069057] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 11/09/2022] [Indexed: 11/25/2022] Open
Abstract
Osteoarthritis (OA) is an age-related chronic progressive degenerative disease that induces persistent pain and disabilities. The development of OA is a complex process, and the risk factors are various, including aging, genetics, trauma and altered biomechanics. Inflammation and immunity play an important role in the pathogenesis of OA. JAK/STAT pathway is one of the most prominent intracellular signaling pathways, regulating cell proliferation, differentiation, and apoptosis. Inflammatory factors can act as the initiators of JAK/STAT pathway, which is implicated in the pathophysiological activity of chondrocyte. In this article, we provide a review on the importance of JAK/STAT pathway in the pathological development of OA. Potentially, JAK/STAT pathway becomes a therapeutic target for managing OA.
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Affiliation(s)
- Qingluo Zhou
- Department of Orthopedics, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Qun Ren
- College of Pharmacy, Gannan Medical University, Ganzhou, China
| | - Linhui Jiao
- College of Pharmacy, Gannan Medical University, Ganzhou, China
| | - Jishang Huang
- Department of Orthopedics, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Jun Yi
- Department of Orthopedics, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Jincai Chen
- Department of Orthopedics, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Jinliang Lai
- Department of Orthopedics, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Guanglin Ji
- Department of Orthopedics, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- *Correspondence: Guanglin Ji, ; Tiansheng Zheng,
| | - Tiansheng Zheng
- Department of Orthopedics, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- *Correspondence: Guanglin Ji, ; Tiansheng Zheng,
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Pan F, Zhang S, Altenried S, Zuber F, Chen Q, Ren Q. Advanced antifouling and antibacterial hydrogels enabled by the controlled thermo-responses of a biocompatible polymer composite. Biomater Sci 2022; 10:6146-6159. [DOI: 10.1039/d2bm01244h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To optimally apply antibiotics and antimicrobials, smart wound dressing conferring controlled drug release and preventing adhesions of biological objects is advantageous. Poly(N-isopropylacrylamide) (PNIPAAm), conventional thermo-responsive polymer, and poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC),...
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48
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Huang J, Zhou Q, Ren Q, Luo L, Ji G, Zheng T. Endoplasmic reticulum stress associates with the development of intervertebral disc degeneration. Front Endocrinol (Lausanne) 2022; 13:1094394. [PMID: 36714579 PMCID: PMC9877331 DOI: 10.3389/fendo.2022.1094394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 12/27/2022] [Indexed: 01/15/2023] Open
Abstract
Endoplasmic reticulum (ER) is an important player in various intracellular signaling pathways that regulate cellular functions in many diseases. Intervertebral disc degeneration (IDD), an age-related degenerative disease, is one of the main clinical causes of low back pain. Although the pathological development of IDD is far from being fully elucidated, many studies have been shown that ER stress (ERS) is involved in IDD development and regulates various processes, such as inflammation, cellular senescence and apoptosis, excessive mechanical loading, metabolic disturbances, oxidative stress, calcium homeostasis imbalance, and extracellular matrix (ECM) dysregulation. This review summarizes the formation of ERS and the potential link between ERS and IDD development. ERS can be a promising new therapeutic target for the clinical management of IDD.
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Affiliation(s)
- Jishang Huang
- Department of Orthopedics, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Qingluo Zhou
- Department of Orthopedics, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Qun Ren
- College of Pharmacy, Gannan Medical University, Ganzhou, China
| | - Liliang Luo
- Department of Orthopedics, Shangyou Hospital of traditional Chinese Medicine, Ganzhou, China
| | - Guanglin Ji
- Department of Orthopedics, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Tiansheng Zheng
- Department of Orthopedics, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- *Correspondence: Tiansheng Zheng,
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Lai X, Ren Q, Vogelbacher F, Sha WEI, Hou X, Yao X, Song Y, Li M. Bioinspired Quasi-3D Multiplexed Anti-Counterfeit Imaging via Self-Assembled and Nanoimprinted Photonic Architectures. Adv Mater 2022; 34:e2107243. [PMID: 34731906 DOI: 10.1002/adma.202107243] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 10/22/2021] [Indexed: 06/13/2023]
Abstract
Innovative multiplexing technologies based on nano-optics for anti-counterfeiting have been proposed as overt and covert technologies to secure products and make them difficult to counterfeit. However, most of these nano-optical anti-counterfeiting materials are metasurfaces and metamaterials with complex and expensive fabrication process, often resulting in materials that are not damage tolerant. Highly efficient anti-counterfeiting technologies with easy fabrication process are targeted for intuitive and effective authentication of banknotes, secure documents, and goods packing. Here, a simple strategy exploiting self-assembling and nanoimprinting technique to fabricate a composite lattice photonic crystal architecture featuring full spatial control of light, multiplexed full-pixel imaging, and multichannel cryptography combined with customized algorithms is reported. In particular, the real-time encryption/recognition of mobile quick response codes and anti-counterfeiting labels on a postage stamp, encoded by the proposed photonic architecture, are both demonstrated. The wave optics of scattering, diffraction, and polarization process involved are also described, validated with numerical simulations and experiments. By introducing a new degree of freedom in the 3D space, the multichannel image switching exhibits unprecedented variability of encryption, providing a promising roadmap to achieve larger information capacity, better security, and higher definition for the benefit of modern anti-counterfeiting security.
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Affiliation(s)
- Xintao Lai
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, Beijing, 100191, China
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qun Ren
- School of Electrical and Information Engineering, Tianjin University, Tianjin, 300072, China
| | - Florian Vogelbacher
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, Beijing, 100191, China
| | - Wei E I Sha
- Key Laboratory of Micro-nano Electronic Devices and Smart Systems of Zhejiang Province, College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Xiaoyu Hou
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, Beijing, 100191, China
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xi Yao
- Department of Biomedical Sciences, Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Yanlin Song
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, Beijing, 100191, China
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Mingzhu Li
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, Beijing, 100191, China
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
- Key Laboratory of Materials Processing and Mold, Zhengzhou University, Ministry of Education, Zhengzhou, 450002, China
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50
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Mansouri M, Khayam N, Jamshidifar E, Pourseif T, Kianian S, Mirzaie A, Akbarzadeh I, Ren Q. Streptomycin Sulfate-Loaded Niosomes Enables Increased Antimicrobial and Anti-Biofilm Activities. Front Bioeng Biotechnol 2021; 9:745099. [PMID: 34778226 PMCID: PMC8578904 DOI: 10.3389/fbioe.2021.745099] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 09/06/2021] [Indexed: 12/26/2022] Open
Abstract
One of the antibiotics used to treat infections is streptomycin sulfate that inhibits both Gram-negative and -positive bacteria. Nanoparticles are suitable carriers for the direct delivery and release of drug agents to infected locations. Niosomes are one of the new drug delivery systems that have received much attention today due to their excellent biofilm penetration property and controlled release. In this study, niosomes containing streptomycin sulfate were prepared by using the thin layer hydration method and optimized based on the size, polydispersity index (PDI), and encapsulation efficiency (EE%) characteristics. It was found that the Span 60-to-Tween 60 ratio of 1.5 and the surfactant-to-cholesterol ratio of 1.02 led to an optimum formulation with a minimum of size, low PDI, and maximum of EE of 97.8 nm, 0.27, and 86.7%, respectively. The drug release investigation showed that 50.0 ± 1.2% of streptomycin sulfate was released from the niosome in 24 h and reached 66.4 ± 1.3% by the end of 72 h. Two-month stability studies at 25° and 4°C showed more acceptable stability of samples kept at 4°C. Consequently, antimicrobial and anti-biofilm activities of streptomycin sulfate-loaded niosomes against Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa were found significantly higher than those of free drug, and the minimum inhibitory concentration values decreased 4- to 8-fold. Furthermore, niosome-encapsulated streptomycin up to 1,500 μg/ml exhibited negligible cytotoxicity against the human foreskin fibroblasts cell line, whereas the free drug exhibited slight cytotoxicity at this concentration. Desired physical characteristics and low toxicity of niosomal nano-carriers containing streptomycin sulfate made them a demanded candidate for the treatment of current bacterial infections and biofilms.
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Affiliation(s)
- Maryam Mansouri
- Department of Microbiology, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Nazanin Khayam
- Department of Biology, Tehran North Branch, Islamic Azad University, Tehran, Iran
| | - Elham Jamshidifar
- Department of Pharmaceutical Nanotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Tara Pourseif
- Department of Microbiology, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Sepideh Kianian
- Master of Medicinal Chemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Tehran, Iran
| | - Amir Mirzaie
- Department of Biology, Parand Branch, Islamic Azad University, Parand, Iran
| | - Iman Akbarzadeh
- Department of Chemical and Petrochemical Engineering, Sharif University of Technology, Tehran, Iran
| | - Qun Ren
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland
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