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Liu JH, Chen XL, Yang HM, Yin YR, Kurniawan A, Zhou CH. Thermosensitive curcumin/silver/montmorillonite-F127 hydrogels with synergistic photodynamic/photothermal/silver ions antibacterial activity. J Mater Chem B 2024; 12:6874-6885. [PMID: 38912877 DOI: 10.1039/d4tb00431k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
Bacterial infections and the emergence of super-resistant bacteria pose a significant risk to human health. Effective sterilization to prevent the development of bacterial drug resistance remains a challenge. Herein, curcumin/silver/montmorillonite (Cur/Ag/Mt) was prepared through a green chemical reduction method with montmorillonite as the carrier, curcumin as the reducing agent and the capping agent, and citric acid as the structure guide agent. Then, a novel dual light-responsive and thermosensitive Pluronic F127-based hydrogel (CAM-F) was prepared by encapsulating Cur/Ag/Mt within the F127 hydrogel. The Cur/Ag/Mt showed strong absorption in the near-infrared region that efficiently converts light into heat for photothermal therapy when the molar ratio of curcumin to silver nitrate was 2 : 1. Specifically, triangular silver nanoparticles reduced by curcumin were immobilized on the Mt layers, which could enhance photodynamic therapy by the metal-enhanced singlet oxygen and metal-enhanced fluorescence mechanisms. Upon combining 405 nm and 808 nm laser irradiation, the CAM-F hydrogel could simultaneously generate reactive oxygen species, increase the local temperature, and sustain the release of Ag+, thus displaying excellent bactericidal performance against Gram-negative and Gram-positive bacteria. The antibacterial rates of CAM-F hydrogels were 99.26 ± 0.95% and 99.95 ± 0.98% for Escherichia coli and Staphylococcus aureus, respectively. The findings suggest the potential of the CAM-F hydrogel as a stable, biologically safe, and broad-spectrum antimicrobial material. The thermosensitive CAM-F hydrogels for synergetic phototherapy may provide a promising strategy for solving clinical problems caused by pathogenic infections.
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Affiliation(s)
- Jia Hui Liu
- Research Group for Advanced Materials & Sustainable Catalysis (AMSC), State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China.
- Anhui International Exchange and Cooperation Base, Qing Yang Institute for Industrial Minerals, You Hua, Qing Yang, Chi Zhou 242804, China
| | - Xiao Lan Chen
- Research Group for Advanced Materials & Sustainable Catalysis (AMSC), State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China.
- Anhui International Exchange and Cooperation Base, Qing Yang Institute for Industrial Minerals, You Hua, Qing Yang, Chi Zhou 242804, China
| | - Hui Min Yang
- Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province, China National Bamboo Research Center, Hangzhou 310012, China
| | - Yu Rong Yin
- Research Group for Advanced Materials & Sustainable Catalysis (AMSC), State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China.
- Anhui International Exchange and Cooperation Base, Qing Yang Institute for Industrial Minerals, You Hua, Qing Yang, Chi Zhou 242804, China
| | - Alfin Kurniawan
- Research Group for Advanced Materials & Sustainable Catalysis (AMSC), State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China.
- Anhui International Exchange and Cooperation Base, Qing Yang Institute for Industrial Minerals, You Hua, Qing Yang, Chi Zhou 242804, China
| | - Chun Hui Zhou
- Research Group for Advanced Materials & Sustainable Catalysis (AMSC), State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China.
- Anhui International Exchange and Cooperation Base, Qing Yang Institute for Industrial Minerals, You Hua, Qing Yang, Chi Zhou 242804, China
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Wang C, Lan X, Zhu L, Wang Y, Gao X, Li J, Tian H, Liang Z, Xu W. Construction Strategy of Functionalized Liposomes and Multidimensional Application. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309031. [PMID: 38258399 DOI: 10.1002/smll.202309031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 12/30/2023] [Indexed: 01/24/2024]
Abstract
Liposomes are widely used in the biological field due to their good biocompatibility and surface modification properties. With the development of biochemistry and material science, many liposome structures and their surface functional components have been modified and optimized one by one, pushing the liposome platform from traditional to functionalized and intelligent, which will better satisfy and expand the needs of scientific research. However, a main limiting factor effecting the efficiency of liposomes is the complicated environmental conditions in the living body. Currently, in order to overcome the above problem, functionalized liposomes have become a very promising strategy. In this paper, binding strategies of liposomes with four main functional elements, namely nucleic acids, antibodies, peptides, and stimuli-responsive motif have been summarized for the first time. In addition, based on the construction characteristics of functionalized liposomes, such as drug-carrying, targeting, long-circulating, and stimulus-responsive properties, a comprehensive overview of their features and respective research progress are presented. Finally, the paper critically presents the limitations of these functionalized liposomes in the current applications and also prospectively suggests the future development directions, aiming to accelerate realization of their industrialization.
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Affiliation(s)
- Chengyun Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, No. 17, Qinghua East Road, Beijing, 100083, China
- College of Food Science and Technology, Hebei Agricultural University, Baoding, Hebei, 071000, China
- Key Laboratory of Precision Nutrition and Food Quality, Beijing Laboratory for Food Quality and Safety, Department of Nutrition and Health, China Agricultural University, Beijing, 100191, China
| | - Xinyue Lan
- Key Laboratory of Precision Nutrition and Food Quality, Beijing Laboratory for Food Quality and Safety, Department of Nutrition and Health, China Agricultural University, Beijing, 100191, China
| | - Longjiao Zhu
- Key Laboratory of Precision Nutrition and Food Quality, Beijing Laboratory for Food Quality and Safety, Department of Nutrition and Health, China Agricultural University, Beijing, 100191, China
| | - Yanhui Wang
- Key Laboratory of Precision Nutrition and Food Quality, Beijing Laboratory for Food Quality and Safety, Department of Nutrition and Health, China Agricultural University, Beijing, 100191, China
| | - Xinru Gao
- College of Food Science and Nutritional Engineering, China Agricultural University, No. 17, Qinghua East Road, Beijing, 100083, China
| | - Jie Li
- College of Food Science and Nutritional Engineering, China Agricultural University, No. 17, Qinghua East Road, Beijing, 100083, China
- Key Laboratory of Precision Nutrition and Food Quality, Beijing Laboratory for Food Quality and Safety, Department of Nutrition and Health, China Agricultural University, Beijing, 100191, China
| | - Hongtao Tian
- College of Food Science and Technology, Hebei Agricultural University, Baoding, Hebei, 071000, China
| | - Zhihong Liang
- College of Food Science and Nutritional Engineering, China Agricultural University, No. 17, Qinghua East Road, Beijing, 100083, China
| | - Wentao Xu
- College of Food Science and Nutritional Engineering, China Agricultural University, No. 17, Qinghua East Road, Beijing, 100083, China
- Key Laboratory of Precision Nutrition and Food Quality, Beijing Laboratory for Food Quality and Safety, Department of Nutrition and Health, China Agricultural University, Beijing, 100191, China
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Hu J, Pang J, Chen L, Li Y, Gan N, Pan Q, Wu D. Photoresponsive Azobenzene Nanocluster-Modified Liposomes: Mechanism Analysis Combining Experiments and Simulations. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:9761-9774. [PMID: 38663878 DOI: 10.1021/acs.langmuir.4c00787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Stimuli-responsive behaviors and controlled release in liposomes are pivotal in nanomedicine. To this end, we present an approach using a photoresponsive azobenzene nanocluster (AzDmpNC), prepared from azobenzene compounds through melting and aggregation. When integrated with liposomes, they form photoresponsive vesicles. The morphology and association with liposomes were investigated by using transmission electron microscopy. Liposomes loaded with calcein exhibited a 9.58% increased release after UV exposure. To gain insights into the underlying processes and elucidate the mechanisms involved. The molecular dynamic simulations based on the reactive force field and all-atom force field were employed to analyze the aggregation of isomers into nanoclusters and their impacts on phospholipid membranes, respectively. The results indicate that the nanoclusters primarily aggregate through π-π and T-stacking forces. The force density inside the cis-isomer of AzDmpNC formed after photoisomerization is lower, leading to its easier dispersion, rapid diffusion, and penetration into the membrane, disrupting the densification.
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Affiliation(s)
- Jie Hu
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
| | - Jingtao Pang
- School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Lijuan Chen
- School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Yilin Li
- School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Na Gan
- School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Qingqing Pan
- School of Preclinical Medicine, Chengdu University, Chengdu 610106, China
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Song SN, Zhao XL, Yang XC, Ding Y, Ren FD, Pang XY, Li B, Hu JY, Chen YZ, Gao WW. Nanoarchitectonics of Bimetallic Cu-/Co-Doped Nitrogen-Carbon Nanozyme-Functionalized Hydrogel with NIR-Responsive Phototherapy for Synergistic Mitigation of Drug-Resistant Bacterial Infections. ACS APPLIED MATERIALS & INTERFACES 2024; 16:16011-16028. [PMID: 38529951 DOI: 10.1021/acsami.4c01783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
Superbug infections and transmission have become major challenges in the contemporary medical field. The development of novel antibacterial strategies to efficiently treat bacterial infections and conquer the problem of antimicrobial resistance (AMR) is extremely important. In this paper, a bimetallic CuCo-doped nitrogen-carbon nanozyme-functionalized hydrogel (CuCo/NC-HG) has been successfully constructed. It exhibits photoresponsive-enhanced enzymatic effects under near-infrared (NIR) irradiation (808 nm) with strong peroxidase (POD)-like and oxidase (OXD)-like activities. Upon NIR irradiation, CuCo/NC-HG possesses photodynamic activity for producing singlet oxygen(1O2), and it also has a high photothermal conversion effect, which not only facilitates the elimination of bacteria but also improves the efficiency of reactive oxygen species (ROS) production and accelerates the consumption of GSH. CuCo/NC-HG shows a lower hemolytic rate and better cytocompatibility than CuCo/NC and possesses a positive charge and macroporous skeleton for restricting negatively charged bacteria in the range of ROS destruction, strengthening the antibacterial efficiency. Comparatively, CuCo/NC and CuCo/NC-HG have stronger bactericidal ability against methicillin-resistant Staphylococcus aureus (MRSA) and ampicillin-resistant Escherichia coli (AmprE. coli) through destroying the cell membranes with a negligible occurrence of AMR. More importantly, CuCo/NC-HG plus NIR irradiation can exhibit satisfactory bactericidal performance in the absence of H2O2, avoiding the toxicity from high-concentration H2O2. In vivo evaluation has been conducted using a mouse wound infection model and histological analyses, and the results show that CuCo/NC-HG upon NIR irradiation can efficiently suppress bacterial infections and promote wound healing, without causing inflammation and tissue adhesions.
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Affiliation(s)
- Sheng-Nan Song
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Xin-Liu Zhao
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Xiao-Chan Yang
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yong Ding
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Feng-Di Ren
- Department of Chemistry, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, Shandong 266071, China
| | - Xue-Yao Pang
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Bo Li
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Ji-Yuan Hu
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yu-Zhen Chen
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Wei-Wei Gao
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
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Zhang J, Guo H, Liu M, Tang K, Li S, Fang Q, Du H, Zhou X, Lin X, Yang Y, Huang B, Yang D. Recent design strategies for boosting chemodynamic therapy of bacterial infections. EXPLORATION (BEIJING, CHINA) 2024; 4:20230087. [PMID: 38855616 PMCID: PMC11022619 DOI: 10.1002/exp.20230087] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 08/30/2023] [Indexed: 06/11/2024]
Abstract
The emergence of drug-resistant bacteria poses a significant threat to people's lives and health as bacterial infections continue to persist. Currently, antibiotic therapy remains the primary approach for tackling bacterial infections. However, the escalating rates of drug resistance coupled with the lag in the development of novel drugs have led to diminishing effectiveness of conventional treatments. Therefore, the development of nonantibiotic-dependent therapeutic strategies has become imperative to impede the rise of bacterial resistance. The emergence of chemodynamic therapy (CDT) has opened up a new possibility due to the CDT can convert H2O2 into •OH via Fenton/Fenton-like reaction for drug-resistant bacterial treatment. However, the efficacy of CDT is limited by a variety of practical factors. To overcome this limitation, the sterilization efficiency of CDT can be enhanced by introducing the therapeutics with inherent antimicrobial capability. In addition, researchers have explored CDT-based combined therapies to augment its antimicrobial effects and mitigate its potential toxic side effects toward normal tissues. This review examines the research progress of CDT in the antimicrobial field, explores various strategies to enhance CDT efficacy and presents the synergistic effects of CDT in combination with other modalities. And last, the current challenges faced by CDT and the future research directions are discussed.
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Affiliation(s)
- Junjie Zhang
- School of Fundamental SciencesBengbu Medical CollegeBengbuChina
| | - Haiyang Guo
- School of Fundamental SciencesBengbu Medical CollegeBengbuChina
| | - Ming Liu
- School of Fundamental SciencesBengbu Medical CollegeBengbuChina
| | - Kaiyuan Tang
- School of Fundamental SciencesBengbu Medical CollegeBengbuChina
| | - Shengke Li
- Macao Centre for Research and Development in Chinese MedicineInstitute of Chinese Medical SciencesUniversity of MacauTaipaMacau SARChina
| | - Qiang Fang
- School of Fundamental SciencesBengbu Medical CollegeBengbuChina
| | - Hengda Du
- School of Fundamental SciencesBengbu Medical CollegeBengbuChina
| | - Xiaogang Zhou
- Anhui Key Laboratory of Infection and Immunity, School of Basic MedicineBengbu Medical CollegeBengbuChina
| | - Xin Lin
- School of Optometry and Ophthalmology and Eye Hospital, State Key Laboratory of OptometryOphthalmology and Vision ScienceWenzhou Medical UniversityWenzhouZhejiangChina
| | - Yanjun Yang
- School of Electrical and Computer Engineering, College of EngineeringThe University of GeorgiaAthensGeorgiaUSA
| | - Bin Huang
- Academy of Integrative Medicine, Fujian Key Laboratory of Integrative Medicine on GeriatricsFujian University of Traditional Chinese MedicineFuzhouFujianChina
| | - Dongliang Yang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), School of Physical and Mathematical SciencesNanjing Tech University (NanjingTech)NanjingChina
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6
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Ye Y, Zou J, Wu W, Wang Z, Wen S, Liang Z, Liu S, Lin Y, Chen X, Luo T, Yang L, Jiang Q, Guo L. Advanced nanozymes possess peroxidase-like catalytic activities in biomedical and antibacterial fields: review and progress. NANOSCALE 2024; 16:3324-3346. [PMID: 38276956 DOI: 10.1039/d3nr05592b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Infectious diseases caused by bacterial invasions have imposed a significant global health and economic burden. More worryingly, multidrug-resistant (MDR) pathogenic bacteria born under the abuse of antibiotics have further escalated the status quo. Nowadays, at the crossroads of multiple disciplines such as chemistry, nanoscience and biomedicine, nanozymes, as enzyme-mimicking nanomaterials, not only possess excellent bactericidal ability but also reduce the possibility of inducing resistance. Thus, nanozymes are promising to serve as an alternative to traditional antibiotics. Nanozymes that mimic peroxidase (POD) activity are also known as POD nanozymes. In recent years, POD nanozymes have become one of the most frequently reported and effective nanozymes due to their broad-spectrum bactericidal properties and unique sterilization mechanism. In this review, we introduce the mechanism as well as the classification of POD nanozymes. More importantly, to further improve the antibacterial efficacy of POD nanozymes, we elaborate on three aspects: (1) improving the physicochemical properties; (2) regulating the catalytic microenvironment; and (3) designing multimodel POD nanozymes. In addition, we review the nanosafety of POD nanozymes for discussing their potential toxicity. Finally, the remaining challenges of POD nanozymes and possible future directions are discussed. This work provides a systematic summary of POD nanozymes and hopefully contributes to the early clinical translation.
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Affiliation(s)
- Yunxin Ye
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, China.
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong 510182, China
| | - Jiyuan Zou
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, China.
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong 510182, China
| | - Weian Wu
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, China.
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong 510182, China
| | - Ziyan Wang
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, China.
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong 510182, China
| | - Siyi Wen
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, China.
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong 510182, China
| | - Zitian Liang
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, China.
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong 510182, China
| | - Shirong Liu
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, China.
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong 510182, China
| | - Yifan Lin
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, China.
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong 510182, China
| | - Xuanyu Chen
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, China.
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong 510182, China
| | - Tao Luo
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, China.
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong 510182, China
| | - Li Yang
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, China.
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong 510182, China
| | - Qianzhou Jiang
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, China.
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong 510182, China
| | - Lvhua Guo
- Department of Prosthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, China.
- Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong 510182, China
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Munir Z, Molinar C, Banche G, Argenziano M, Magnano G, Cavallo L, Mandras N, Cavalli R, Guiot C. Encapsulation in Oxygen-Loaded Nanobubbles Enhances the Antimicrobial Effectiveness of Photoactivated Curcumin. Int J Mol Sci 2023; 24:15595. [PMID: 37958582 PMCID: PMC10650092 DOI: 10.3390/ijms242115595] [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: 09/15/2023] [Revised: 10/10/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023] Open
Abstract
In both healthcare and agriculture, antibiotic resistance is an alarming issue. Biocompatible and biodegradable ingredients (e.g., curcumin) are given priority in "green" criteria supported by the Next Generation EU platform. The solubility and stability of curcumin would be significantly improved if it were enclosed in nanobubbles (NB), and photoactivation with the correct wavelength of light can increase its antibacterial efficacy. A continuous release of curcumin over a prolonged period was provided by using innovative chitosan-shelled carriers, i.e., curcumin-containing nanobubbles (Curc-CS-NBs) and oxygen-loaded curcumin-containing nanobubbles (Curc-Oxy-CS-NBs). The results demonstrated that after photoactivation, both types of NBs exhibited increased effectiveness. For Staphylococcus aureus, the minimum inhibitory concentration (MIC) for Curc-CS-NBs remained at 46 µg/mL following photodynamic activation, whereas it drastically dropped to 12 µg/mL for Curc-Oxy-CS-NBs. Enterococcus faecalis shows a decreased MIC for Curc-CS-NB and Curc-Oxy-CS-NB (23 and 46 µg/mL, respectively). All bacterial strains were more effectively killed by NBs that had both oxygen and LED irradiation. A combination of Curc-Oxy-CS-NB and photodynamic stimulation led to a killing of microorganisms due to ROS-induced bacterial membrane leakage. This approach was particularly effective against Escherichia coli. In conclusion, this work shows that Curc-CS-NBs and Curc-Oxy-CS-exhibit extremely powerful antibacterial properties and represent a potential strategy to prevent antibiotic resistance and encourage the use of eco-friendly substitutes in agriculture and healthcare.
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Affiliation(s)
- Zunaira Munir
- Department of Neurosciences, University of Turin, 10125 Torino, Italy; (Z.M.); (C.G.)
| | - Chiara Molinar
- Department of Drug Sciences and Technologies, University of Turin, 10125 Torino, Italy; (C.M.); (M.A.); (G.M.); (R.C.)
| | - Giuliana Banche
- Department of Public Health and Pediatric Sciences, University of Turin, 10126 Torino, Italy; (G.B.); (L.C.)
| | - Monica Argenziano
- Department of Drug Sciences and Technologies, University of Turin, 10125 Torino, Italy; (C.M.); (M.A.); (G.M.); (R.C.)
| | - Greta Magnano
- Department of Drug Sciences and Technologies, University of Turin, 10125 Torino, Italy; (C.M.); (M.A.); (G.M.); (R.C.)
| | - Lorenza Cavallo
- Department of Public Health and Pediatric Sciences, University of Turin, 10126 Torino, Italy; (G.B.); (L.C.)
| | - Narcisa Mandras
- Department of Public Health and Pediatric Sciences, University of Turin, 10126 Torino, Italy; (G.B.); (L.C.)
| | - Roberta Cavalli
- Department of Drug Sciences and Technologies, University of Turin, 10125 Torino, Italy; (C.M.); (M.A.); (G.M.); (R.C.)
| | - Caterina Guiot
- Department of Neurosciences, University of Turin, 10125 Torino, Italy; (Z.M.); (C.G.)
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