1
|
Gao C, Chen Y, Cheng X, Zhang Y, Zhang Y, Wang Y, Cui Z, Liao Y, Luo P, Wu W, Wang C, Zeng H, Zou Q, Gu J. A novel structurally identified epitope delivered by macrophage membrane-coated PLGA nanoparticles elicits protection against Pseudomonas aeruginosa. J Nanobiotechnology 2022; 20:532. [PMID: 36517801 PMCID: PMC9750051 DOI: 10.1186/s12951-022-01725-x] [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: 05/01/2022] [Accepted: 11/28/2022] [Indexed: 12/15/2022] Open
Abstract
The increasing prevalence of antibiotic resistance by Pseudomonas aeruginosa (PA) raises an urgent need for an effective vaccine. The outer membrane proteins of PA, especially those that are upregulated during infection, are ideal vaccine targets. However, the strong hydrophobicity of these proteins hinders their application for this purpose. In this study, we selected eight outer membrane proteins from PA with the most significantly upregulated expression. Their extracellular loops were analyzed and screened by using sera from patients who had recovered from PA infection. As a result, a novel immunogenic epitope (Ep167-193) from PilY1 (PA4554) was found. Moreover, we constructed a macrophage membrane-coated PLGA (poly lactic-co-glycolic acid) nanoparticle vaccine carrying PilY1 Ep167-193 (PNPs@M-Ep167-193) that elicits a Th2 immune response and confers adequate protection in mice. Our data furnished the promising vaccine candidate PNPs@M-Ep167-193 while providing additional evidence for structure-based epitope identification and vaccine design.
Collapse
Affiliation(s)
- Chen Gao
- grid.410570.70000 0004 1760 6682National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Army Medical University, The 30th, Gaotanyan Street, Shapingba District, Chongqing, 400038 People’s Republic of China
| | - Yin Chen
- grid.410570.70000 0004 1760 6682State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Combined Injury of PLA, Chongqing, Engineering Research Center for Nanomedicine, College of Preventive Medicine, Army Medical University, Chongqing, 400038 China
| | - Xin Cheng
- grid.410570.70000 0004 1760 6682National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Army Medical University, The 30th, Gaotanyan Street, Shapingba District, Chongqing, 400038 People’s Republic of China
| | - Yi Zhang
- grid.410570.70000 0004 1760 6682National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Army Medical University, The 30th, Gaotanyan Street, Shapingba District, Chongqing, 400038 People’s Republic of China
| | - Yueyue Zhang
- grid.410570.70000 0004 1760 6682National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Army Medical University, The 30th, Gaotanyan Street, Shapingba District, Chongqing, 400038 People’s Republic of China
| | - Ying Wang
- grid.410570.70000 0004 1760 6682953Th Hospital, Shigatse Branch, Xinqiao Hospital, Army Medical University, (Third Military Medical University), Shigatse, 857000 China
| | - Zhiyuan Cui
- grid.410570.70000 0004 1760 6682National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Army Medical University, The 30th, Gaotanyan Street, Shapingba District, Chongqing, 400038 People’s Republic of China
| | - Yaling Liao
- grid.410570.70000 0004 1760 6682National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Army Medical University, The 30th, Gaotanyan Street, Shapingba District, Chongqing, 400038 People’s Republic of China
| | - Ping Luo
- grid.410570.70000 0004 1760 6682National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Army Medical University, The 30th, Gaotanyan Street, Shapingba District, Chongqing, 400038 People’s Republic of China
| | - Weihui Wu
- grid.216938.70000 0000 9878 7032State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Molecular Microbiology and Technology of the Ministry of Education, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin, China
| | - Cheng Wang
- grid.410570.70000 0004 1760 6682State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Combined Injury of PLA, Chongqing, Engineering Research Center for Nanomedicine, College of Preventive Medicine, Army Medical University, Chongqing, 400038 China
| | - Hao Zeng
- grid.410570.70000 0004 1760 6682National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Army Medical University, The 30th, Gaotanyan Street, Shapingba District, Chongqing, 400038 People’s Republic of China
| | - Quanming Zou
- grid.410570.70000 0004 1760 6682National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Army Medical University, The 30th, Gaotanyan Street, Shapingba District, Chongqing, 400038 People’s Republic of China
| | - Jiang Gu
- grid.410570.70000 0004 1760 6682National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Army Medical University, The 30th, Gaotanyan Street, Shapingba District, Chongqing, 400038 People’s Republic of China
| |
Collapse
|
3
|
Gu H, Zeng X, Peng L, Xiang C, Zhou Y, Zhang X, Zhang J, Wang N, Guo G, Li Y, Liu K, Gu J, Zeng H, Zhuang Y, Li H, Zhang J, Zhang W, Zou Q, Shi Y. Vaccination induces rapid protection against bacterial pneumonia via training alveolar macrophage in mice. eLife 2021; 10:e69951. [PMID: 34544549 PMCID: PMC8455131 DOI: 10.7554/elife.69951] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 08/20/2021] [Indexed: 02/05/2023] Open
Abstract
Vaccination strategies for rapid protection against multidrug-resistant bacterial infection are very important, especially for hospitalized patients who have high risk of exposure to these bacteria. However, few such vaccination strategies exist due to a shortage of knowledge supporting their rapid effect. Here, we demonstrated that a single intranasal immunization of inactivated whole cell of Acinetobacter baumannii elicits rapid protection against broad A. baumannii-infected pneumonia via training of innate immune response in Rag1-/- mice. Immunization-trained alveolar macrophages (AMs) showed enhanced TNF-α production upon restimulation. Adoptive transfer of immunization-trained AMs into naive mice mediated rapid protection against infection. Elevated TLR4 expression on vaccination-trained AMs contributed to rapid protection. Moreover, immunization-induced rapid protection was also seen in Pseudomonas aeruginosa and Klebsiella pneumoniae pneumonia models, but not in Staphylococcus aureus and Streptococcus pneumoniae model. Our data reveal that a single intranasal immunization induces rapid and efficient protection against certain Gram-negative bacterial pneumonia via training AMs response, which highlights the importance and the possibility of harnessing trained immunity of AMs to design rapid-effecting vaccine.
Collapse
MESH Headings
- Acinetobacter Infections/immunology
- Acinetobacter Infections/microbiology
- Acinetobacter Infections/prevention & control
- Acinetobacter baumannii/immunology
- Administration, Intranasal
- Adoptive Transfer
- Animals
- Bacterial Vaccines/administration & dosage
- Cells, Cultured
- Disease Models, Animal
- Female
- Homeodomain Proteins/genetics
- Immunity, Innate/drug effects
- Klebsiella Infections/immunology
- Klebsiella Infections/microbiology
- Klebsiella Infections/prevention & control
- Klebsiella pneumoniae/immunology
- Macrophages, Alveolar/drug effects
- Macrophages, Alveolar/immunology
- Macrophages, Alveolar/microbiology
- Macrophages, Alveolar/transplantation
- Mice, Inbred C57BL
- Mice, Knockout
- Pneumonia, Bacterial/immunology
- Pneumonia, Bacterial/microbiology
- Pneumonia, Bacterial/prevention & control
- Pseudomonas Infections/immunology
- Pseudomonas Infections/microbiology
- Pseudomonas Infections/prevention & control
- Pseudomonas aeruginosa/immunology
- Time Factors
- Toll-Like Receptor 4/genetics
- Toll-Like Receptor 4/metabolism
- Tumor Necrosis Factor-alpha/genetics
- Tumor Necrosis Factor-alpha/metabolism
- Vaccination
- Vaccines, Inactivated/administration & dosage
- Mice
Collapse
Affiliation(s)
- Hao Gu
- West China Biopharmaceutical Research Institute,West China Hospital, Sichuan UniversityChengduChina
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical UniversityChongqingChina
- Department of Clinical Laboratory, 971st Hospital of People's Liberation ArmyQingdaoChina
| | - Xi Zeng
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical UniversityChongqingChina
- Department of Phamacy, The 78 th Group Army Hospital of Chinese People's Liberation ArmyMudanjiangChina
| | - Liusheng Peng
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical UniversityChongqingChina
| | - Chuanying Xiang
- West China Biopharmaceutical Research Institute,West China Hospital, Sichuan UniversityChengduChina
| | - Yangyang Zhou
- West China Biopharmaceutical Research Institute,West China Hospital, Sichuan UniversityChengduChina
| | - Xiaomin Zhang
- West China Biopharmaceutical Research Institute,West China Hospital, Sichuan UniversityChengduChina
| | - Jixin Zhang
- West China Biopharmaceutical Research Institute,West China Hospital, Sichuan UniversityChengduChina
| | - Ning Wang
- West China Biopharmaceutical Research Institute,West China Hospital, Sichuan UniversityChengduChina
| | - Gang Guo
- West China Biopharmaceutical Research Institute,West China Hospital, Sichuan UniversityChengduChina
| | - Yan Li
- West China Biopharmaceutical Research Institute,West China Hospital, Sichuan UniversityChengduChina
| | - Kaiyun Liu
- West China Biopharmaceutical Research Institute,West China Hospital, Sichuan UniversityChengduChina
| | - Jiang Gu
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical UniversityChongqingChina
| | - Hao Zeng
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical UniversityChongqingChina
| | - Yuan Zhuang
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical UniversityChongqingChina
| | - Haibo Li
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical UniversityChongqingChina
| | - Jinyong Zhang
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical UniversityChongqingChina
| | - Weijun Zhang
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical UniversityChongqingChina
| | - Quanming Zou
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical UniversityChongqingChina
| | - Yun Shi
- West China Biopharmaceutical Research Institute,West China Hospital, Sichuan UniversityChengduChina
| |
Collapse
|
4
|
Li J, Wang M, Peng L, Zhang H, He H, Zhao Y. Effect of care bundles in the nursing of severe pneumonia. Am J Transl Res 2021; 13:1757-1763. [PMID: 33841699 PMCID: PMC8014355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 12/26/2020] [Indexed: 06/12/2023]
Abstract
OBJECTIVE To explore the effect of care bundles and analyze the influence of different angles of turning over on the sputum excretion of mechanically ventilated patients with severe pneumonia. METHODS 120 patients with severe pneumonia in our hospital from October 2016 to October 2019 were equally randomized into four groups, each with 30, according to the date of admission. The control group was given conventional nursing and placed in a position of left 30°-half lying-right 30°; the group A was given comprehensive care bundles and placed in a position of left 30°-half lying-right 30°; the group B was given comprehensive care bundles and placed in a position of left 45°-half lying-right 45°, and the group C was given comprehensive care bundles and placed in a position of 60° left-half lying-60° right. The respiratory rates and oxygenation indexes of patients in the three groups (group A, B, C) in lateral position at 2 h and 6 h respectively before and after mechanical ventilation were compared. And we compared the nursing efficiency and satisfaction. RESULTS The control group showed lower nursing efficiency and satisfaction compared with the group A (P<0.05). The group B and C showed higher oxygenation index after six hours of ventilation compared with group A (P<0.05). After two hours of mechanical ventilation, the group B and C showed lower respiratory rate and higher oxygenation index compared with the group A, and the respiratory rate and oxygenation index of the group B were closest to the normal range (P<0.05). CONCLUSION The sputum excretion effect of mechanically ventilated patients with severe pneumonia was the best if they were placed in a position of left 45°-half lying-right 45° and given comprehensive care bundles.
Collapse
Affiliation(s)
- Jing Li
- Emergency Intensive Care Unit, The People’s Hospital of Langfang CityLangfang, China
| | - Meiqin Wang
- Emergency Intensive Care Unit, The People’s Hospital of Langfang CityLangfang, China
| | - Lingling Peng
- Emergency Intensive Care Unit, The People’s Hospital of Langfang CityLangfang, China
| | - Hongjuan Zhang
- Emergency Intensive Care Unit, The People’s Hospital of Langfang CityLangfang, China
| | - Huiling He
- Emergency Intensive Care Unit, The People’s Hospital of Langfang CityLangfang, China
| | - Yanhua Zhao
- Hospital of People’s Public Security University of ChinaBeijing, China
| |
Collapse
|