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Li H, Guan M, Zhang NN, Wang Y, Liang T, Wu H, Wang C, Sun T, Liu S. Harnessing nanomedicine for modulating microglial states in the central nervous system disorders: Challenges and opportunities. Biomed Pharmacother 2024; 177:117011. [PMID: 38917758 DOI: 10.1016/j.biopha.2024.117011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 05/30/2024] [Accepted: 06/17/2024] [Indexed: 06/27/2024] Open
Abstract
Microglia are essential for maintaining homeostasis and responding to pathological events in the central nervous system (CNS). Their dynamic and multidimensional states in different environments are pivotal factors in various CNS disorders. However, therapeutic modulation of microglial states is challenging due to the intricate balance these cells maintain in the CNS environment and the blood-brain barrier's restriction of drug delivery. Nanomedicine presents a promising avenue for addressing these challenges, offering a method for the targeted and efficient modulation of microglial states. This review covers the challenges faced in microglial therapeutic modulation and potential use of nanoparticle-based drug delivery systems. We provide an in-depth examination of nanoparticle applications for modulating microglial states in a range of CNS disorders, encompassing neurodegenerative and autoimmune diseases, infections, traumatic injuries, stroke, tumors, chronic pain, and psychiatric conditions. This review highlights the recent advancements and future prospects in nanomedicine for microglial modulation, paving the way for future research and clinical applications of therapeutic interventions in CNS disorders.
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Affiliation(s)
- Haisong Li
- Cancer Center, The First Hospital, Jilin University, Changchun, Jilin, China; Department of Neurosurgery, The First Hospital, Jilin University, Changchun, Jilin, China
| | - Meng Guan
- Cancer Center, The First Hospital, Jilin University, Changchun, Jilin, China; Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin, China; National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin, China
| | - Ning-Ning Zhang
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, Jilin, China
| | - Yizhuo Wang
- Cancer Center, The First Hospital, Jilin University, Changchun, Jilin, China
| | - Tingting Liang
- Cancer Center, The First Hospital, Jilin University, Changchun, Jilin, China
| | - Haitao Wu
- Cancer Center, The First Hospital, Jilin University, Changchun, Jilin, China
| | - Chang Wang
- Cancer Center, The First Hospital, Jilin University, Changchun, Jilin, China.
| | - Tianmeng Sun
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin, China; National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin, China; International Center of Future Science, Jilin University, Changchun, Jilin, China; State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, Jilin, China.
| | - Shuhan Liu
- Cancer Center, The First Hospital, Jilin University, Changchun, Jilin, China; Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, Jilin, China; National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin, China.
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Liao C, Yu C, Guo J, Guan M. Subinhibitory concentrations of glabridin from Glycyrrhiza glabra L. reduce Listeria monocytogenes motility and hemolytic activity but do not exhibit antimicrobial activity. Front Microbiol 2024; 15:1388388. [PMID: 39086651 PMCID: PMC11288822 DOI: 10.3389/fmicb.2024.1388388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 07/02/2024] [Indexed: 08/02/2024] Open
Abstract
Increases in the virulence and survival of some pathogens in the presence of subinhibitory concentrations of antibiotics have been reported. However, research on the effects of subinhibitory concentrations of antimicrobial substances derived from traditional Chinese medicine on pathogens is still insufficient. Glabridin is a well-known active isoflavone found in licorice roots that possesses a wide range of biological activities. Therefore, in this study, Listeria monocytogenes (L. monocytogenes) exposed to subinhibitory concentrations of glabridin was used as the research object. The minimum inhibitory concentration (MIC) was determined for L. monocytogenes. We investigated the impacts of subinhibitory concentrations of glabridin on the morphology, motility, biofilm formation, adherence, and survival of L. monocytogenes. The results indicated that the MIC of glabridin for L. monocytogenes was 31.25 μg/mL. At 1/8, 1/4, or 1/2 of the MIC, glabridin did not affect the growth, morphology, flagellar production, or biofilm formation of L. monocytogenes. However, subinhibitory concentrations of glabridin inhibited bacterial swimming and swarming motility and decreased the hemolytic activity of L. monocytogenes. Glabridin reduced the hemolytic activity of L. monocytogenes culture supernatants. The results also showed that subinhibitory concentrations of glabridin had no toxic effect on RAW264.7 cells but decreased the intracellular growth of L. monocytogenes in RAW264.7 cells. Furthermore, subinhibitory concentrations of glabridin triggered ROS production but did not induce MET formation in macrophages. In addition, glabridin did not enhance the capacity of L. monocytogenes to trigger METs or the extracellular killing of macrophages by METs. Thus, we conclude that subinhibitory concentrations of glabridin reduce L. monocytogenes motility and hemolytic activity but do not exhibit antimicrobial activity. Glabridin could be an interesting food additive as a bacteriostatic agent with anti-Listeria activity.
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Affiliation(s)
- Chengshui Liao
- College of Animal Science and Technology/Laboratory of Functional Microbiology and Animal Health, Henan University of Science and Technology, Luoyang, China
- Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang, China
- The Key Lab of Animal Disease and Public Health, Henan University of Science and Technology, Luoyang, China
| | - Chuan Yu
- Animal Diseases and Public Health Engineering Research Center of Henan Province, Luoyang Polytechnic, Luoyang, China
| | - Jinxiang Guo
- Animal Diseases and Public Health Engineering Research Center of Henan Province, Luoyang Polytechnic, Luoyang, China
| | - Mengxiang Guan
- Animal Diseases and Public Health Engineering Research Center of Henan Province, Luoyang Polytechnic, Luoyang, China
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Feodorova VA, Zaitsev SS, Khizhnyakova MA, Lavrukhin MS, Saltykov YV, Zaberezhny AD, Larionova OS. Complete genome of the Listeria monocytogenes strain AUF, used as a live listeriosis veterinary vaccine. Sci Data 2024; 11:643. [PMID: 38886393 PMCID: PMC11183264 DOI: 10.1038/s41597-024-03440-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 05/28/2024] [Indexed: 06/20/2024] Open
Abstract
Listeria monocytogenes (Lm) is a highly pathogenic bacterium that can cause listeriosis, a relatively rare food-borne infectious disease that affects farm, domestic, wild animals and humans as well. The infected livestock is the frequent sources of Lm. Vaccination is one of the methods of controlling listeriosis in target farm animals to prevent Lm-associated food contamination. Here we report the complete sequence of the Lm strain AUF attenuated from a fully-virulent Lm strain by ultraviolet irradiation, successfully used since the 1960s as a live whole-cell veterinary vaccine. The de novo assembled genome consists of a circular chromosome of 2,942,932 bp length, including more than 2,800 CDSs, 17 pseudogenes, 5 antibiotic resistance genes, and 56/92 virulence genes. Two wild Lm strains, the EGD and the 10403S that is also used in cancer Immunotherapy, were the closest homologs for the Lm strain AUF. Although all three strains belonged to different sequence types (ST), namely ST12, ST85, and ST1538, they were placed in the same genetic lineage II, CC7.
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Affiliation(s)
- Valentina A Feodorova
- Laboratory for Fundamental and Applied Research, Saratov State University of Genetics, Biotechnology and Engineering named after N.I. Vavilov, Saratov, Russia.
- Department for Microbiology and Biotechnology, Saratov State University of Genetics, Biotechnology and Engineering named after N.I. Vavilov, Saratov, Russia.
| | - Sergey S Zaitsev
- Laboratory for Fundamental and Applied Research, Saratov State University of Genetics, Biotechnology and Engineering named after N.I. Vavilov, Saratov, Russia
| | - Mariya A Khizhnyakova
- Laboratory for Fundamental and Applied Research, Saratov State University of Genetics, Biotechnology and Engineering named after N.I. Vavilov, Saratov, Russia
| | - Maxim S Lavrukhin
- Laboratory for Fundamental and Applied Research, Saratov State University of Genetics, Biotechnology and Engineering named after N.I. Vavilov, Saratov, Russia
| | - Yury V Saltykov
- Laboratory for Fundamental and Applied Research, Saratov State University of Genetics, Biotechnology and Engineering named after N.I. Vavilov, Saratov, Russia
| | - Alexey D Zaberezhny
- All-Russian Scientific Research and Technological Institute of Biological Industry, Biocombinat, Moscow, Russia
| | - Olga S Larionova
- Laboratory for Fundamental and Applied Research, Saratov State University of Genetics, Biotechnology and Engineering named after N.I. Vavilov, Saratov, Russia
- Department for Microbiology and Biotechnology, Saratov State University of Genetics, Biotechnology and Engineering named after N.I. Vavilov, Saratov, Russia
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Oliveira TFD, Kuniyoshi TM, Frota EG, Bermúdez-Puga S, Sakaue LN, Cassiano LL, Tachibana L, Piccoli RAM, Converti A, Oliveira RPDS. Anti-Listerial Activity of Bacteriocin-like Inhibitory Substance Produced by Enterococcus lactis LBM BT2 Using Alternative Medium with Sugarcane Molasses. Antibiotics (Basel) 2024; 13:210. [PMID: 38534645 DOI: 10.3390/antibiotics13030210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 02/17/2024] [Accepted: 02/20/2024] [Indexed: 03/28/2024] Open
Abstract
Listeria monocytogenes is a foodborne pathogen that contaminates food-processing environments and persists within biofilms on equipment, thus reaching final products by cross-contamination. With the growing demand for clean-label products, the search for natural antimicrobials as biopreservants, such as bacteriocins, has shown promising potential. In this context, this study aimed to evaluate the anti-listerial action of bacteriocins produced by Enterococcus lactis LBM BT2 in an alternative medium containing sugarcane molasses (SCM). Molecular analyses were carried out to characterize the strain, including the presence of bacteriocin-related genes. In the kinetic study on SCM medium E. lactis, LBM BT2 showed biomass and bacteriocin productions similar to those observed on a sucrose-based medium (control), highlighting the potential of the sugarcane molasses as a low-cost substrate. Stability tests revealed that the molecule remained active in wide ranges of pH (4-10) and temperature (60-100 °C). Furthermore, the proteolytic treatment reduced the biomolecule's antimicrobial activity, highlighting its proteinaceous nature. After primary purification by salting out and tangential flow filtration, the bacteriocin-like inhibitory substance (BLIS) showed bacteriostatic activity on suspended L. monocytogenes cells and against biofilm formation at a concentration of 0.625 mg/mL. These results demonstrate the potential of the produced BLIS as a biopreservative in the food industry.
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Affiliation(s)
- Taciana Freire de Oliveira
- Laboratory of Microbial Biomolecules, School of Pharmaceutical Sciences, University of São Paulo, Rua do Lago, 250, São Paulo 05508-000, Brazil
| | - Taís Mayumi Kuniyoshi
- Laboratory of Microbial Biomolecules, School of Pharmaceutical Sciences, University of São Paulo, Rua do Lago, 250, São Paulo 05508-000, Brazil
| | - Elionio Galvão Frota
- Laboratory of Microbial Biomolecules, School of Pharmaceutical Sciences, University of São Paulo, Rua do Lago, 250, São Paulo 05508-000, Brazil
| | - Sebastián Bermúdez-Puga
- Laboratory of Microbial Biomolecules, School of Pharmaceutical Sciences, University of São Paulo, Rua do Lago, 250, São Paulo 05508-000, Brazil
| | - Letícia Naomy Sakaue
- Laboratory of Microbial Biomolecules, School of Pharmaceutical Sciences, University of São Paulo, Rua do Lago, 250, São Paulo 05508-000, Brazil
| | - Luara Lucena Cassiano
- Aquaculture Research Center, Scientific Research of Fisheries Institute, APTA, SAA, Av. Conselheiro Rodrigues Alves, 1252, São Paulo 04014-002, Brazil
| | - Leonardo Tachibana
- Aquaculture Research Center, Scientific Research of Fisheries Institute, APTA, SAA, Av. Conselheiro Rodrigues Alves, 1252, São Paulo 04014-002, Brazil
| | - Rosane Aparecida Moniz Piccoli
- Bionanomanufacturing Nucleus, Institute for Technological Research (IPT), Av. Prof. Almeida Prado, 532, São Paulo 05508-901, Brazil
| | - Attilio Converti
- Department of Civil, Chemical and Environmental Engineering, Pole of Chemical Engineering, University of Genoa, Via Opera Pia 15, 16145 Genoa, Italy
| | - Ricardo Pinheiro de Souza Oliveira
- Laboratory of Microbial Biomolecules, School of Pharmaceutical Sciences, University of São Paulo, Rua do Lago, 250, São Paulo 05508-000, Brazil
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Yan H, Wu L, Wang J, Zheng Y, Zhao F, Bai Q, Hu H, Liang H, Niu X. Target-triggered dual signal amplification based on HCR-enhanced nanozyme activity for the sensitive visual detection of Escherichia coli. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:496-502. [PMID: 38078483 DOI: 10.1039/d3ay01824e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
The detection of foodborne pathogens is crucial for food hygiene regulation and disease diagnosis. Colorimetry has become one of the main analytical methods in studying foodborne pathogens due to its advantages of visualization, low cost, simple operation, and no complex instrument. However, the low sensitivity limits its applications in early identification and on-site detection for trace analytes. In order to overcome such a limitation, herein we propose a joint strategy featuring dual signal amplification based on the hybridization chain reaction (HCR) and DNA-enhanced peroxidase-like activity of gold nanoparticles (AuNPs) for the sensitive visual detection of Escherichia coli. Target bacteria bound specifically to the aptamer domain in the capture hairpin probe, exposing the trigger domain for HCR and forming the extended double-stranded DNA (dsDNA) structures. The peroxidase-like catalytic capacity of AuNPs can be enhanced significantly by dsDNAs with the sticky ends of dsDNAs being adsorbed on AuNPs and the rigidity of dsDNAs causing the spatial regulation of AuNP concentration. The intensity of the enhancement was linearly related to the number of target bacteria. With the above strategy, the detection limit of our colorimetric method for Escherichia coli was down to 28 CFU mL-1 within a short analytical time (50 min). This study provides a new perspective for the sensitive and visual detection of early bacterial contamination in foods.
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Affiliation(s)
- Hangli Yan
- Department of Public Health Laboratory Sciences, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China.
| | - Linghao Wu
- Department of Public Health Laboratory Sciences, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China.
| | - Jingyu Wang
- Department of Public Health Laboratory Sciences, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China.
| | - Yi Zheng
- Department of Public Health Laboratory Sciences, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China.
| | - Fengxia Zhao
- Department of Public Health Laboratory Sciences, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China.
| | - Qinqin Bai
- Department of Public Health Laboratory Sciences, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China.
| | - Hongmei Hu
- Hengyang Center for Disease Control and Prevention, Hengyang 421001, China
| | - Hao Liang
- Department of Public Health Laboratory Sciences, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China.
| | - Xiangheng Niu
- Department of Public Health Laboratory Sciences, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China.
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Glass K, McLure A, Bourke S, Cribb DM, Kirk MD, March J, Daughtry B, Smiljanic S, Lancsar E. The Cost of Foodborne Illness and Its Sequelae in Australia Circa 2019. Foodborne Pathog Dis 2023; 20:419-426. [PMID: 37610847 DOI: 10.1089/fpd.2023.0015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023] Open
Abstract
Foodborne illnesses cause a significant health burden, with Campylobacter and norovirus the most common causes of illness and Salmonella a common cause of hospitalization and occasional cause of death. Estimating the cost of illness can assist in quantifying this health burden, with pathogen-specific costs informing prioritization of interventions. We used a simulation-based approach to cost foodborne disease in Australia, capturing the cost of premature mortality, direct costs of nonfatal illness (including health care costs, medications, and tests), indirect costs of illness due to lost productivity, and costs associated with pain and suffering. In Australia circa 2019, the cost in Australian Dollars (AUD) of foodborne illness and its sequelae was 2.44 billion (90% uncertainty interval 1.65-3.68) each year, with the highest pathogen-specific costs for Campylobacter, non-typhoidal Salmonella, non-Shiga toxin-producing pathogenic Escherichia coli, and norovirus. The highest cost per case was for Listeria monocytogenes (AUD 776,000). Lost productivity was the largest component cost for foodborne illness due to all causes and for most individual pathogens; the exceptions were pathogens causing more severe illness such as Salmonella and L. monocytogenes, where premature mortality was the largest component cost. Foodborne illness results in a substantial cost to Australia; interventions to improve food safety across industry, retail, and consumers are needed to maintain public health safety.
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Affiliation(s)
- Kathryn Glass
- National Centre for Epidemiology and Population Health, Australian National University, Canberra, Australia
| | - Angus McLure
- National Centre for Epidemiology and Population Health, Australian National University, Canberra, Australia
| | - Siobhan Bourke
- National Centre for Epidemiology and Population Health, Australian National University, Canberra, Australia
| | - Danielle M Cribb
- National Centre for Epidemiology and Population Health, Australian National University, Canberra, Australia
| | - Martyn D Kirk
- National Centre for Epidemiology and Population Health, Australian National University, Canberra, Australia
| | - Jason March
- Food Standards Australia New Zealand, Canberra BC, Australia
| | - Ben Daughtry
- Food Standards Australia New Zealand, Canberra BC, Australia
| | | | - Emily Lancsar
- National Centre for Epidemiology and Population Health, Australian National University, Canberra, Australia
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