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Franzoni G, Signorelli F, Donniacuo A, Schiavo L, Napoletano M, De Matteis G, Grandoni F, Zinellu S, Bove V, Dei Giudici S, De Carlo E, Galiero G, Napolitano F, Martucciello A. Exploring potential cytokine profiles as diagnostic biomarkers for brucellosis in Mediterranean Buffaloes. Front Vet Sci 2025; 12:1583858. [PMID: 40406273 PMCID: PMC12097277 DOI: 10.3389/fvets.2025.1583858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2025] [Accepted: 04/11/2025] [Indexed: 05/26/2025] Open
Abstract
Brucellosis is a zoonotic disease, with an important economic impact on the livestock industry and public health worldwide. Both Brucella abortus and Brucella melitensis can infect Mediterranean Buffalo (Bubalus bubalis), leading to infertility and abortion. In ruminants, the standard diagnostic approach involves two serological tests, the Rose Bengal Test and the Complement Fixation Test, applied in parallel, though their specificity requires improvement. Cytokines play a crucial role in coordinating immune responses through complex networks and can serve as biomarkers for various diseases. This study explored the potential use of cytokines as immunological biomarkers for Brucella infection in Mediterranean Buffalo. For this purpose, we included 18 healthy and 20 Brucella-infected buffaloes in our analysis. Heparinized blood samples were stimulated with the Brucella antigen, with PBS as nil control and PWM as lymphocyte viability control. After 16-24 h, plasma levels of IL-1α, IL-1β, IL-4, IL-6, IL-10, IL-17, IL-36Ra, MIP-1α, MIP-1β, MCP-1, CXCL8, IP-10, IFN-γ, TNF, and VEGF-A were measured using multiplex ELISA. Our results showed that infected animals released significantly higher levels of IFN-γ, IP-10, MCP-1 in response to Brucella antigen compared to healthy controls. Conversely, healthy animals released instead higher levels of IL-1α, IL-1β, IL-6 and IL-10 following antigen stimulation compared to infected animals. Finally, sequential canonical discriminant analyses were performed to generate predictive cytokine profiles for each group. The findings indicated that a combination of five cytokines (IFN-γ, IP-10, IL-1α, IL-1β, IL-6) can effectively distinguished infected from healthy buffaloes. Overall, this study suggests that incorporating these key immune cytokines could improve the diagnostic accuracy of brucellosis in Mediterranean Buffalo.
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Affiliation(s)
- Giulia Franzoni
- Department of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, Sassari, Italy
| | - Federica Signorelli
- Council for Agricultural Research and Economics (CREA)- Research Centre for Animal Production and Aquaculture, Monterotondo (RM), Italy
| | - Anna Donniacuo
- National Reference Centre for Hygiene and Technologies of Mediterranean Buffalo Farming and Productions, Istituto Zooprofilattico Sperimentale del Mezzogiorno, Salerno, Italy
| | - Lorena Schiavo
- National Reference Centre for Hygiene and Technologies of Mediterranean Buffalo Farming and Productions, Istituto Zooprofilattico Sperimentale del Mezzogiorno, Salerno, Italy
| | - Michele Napoletano
- National Reference Centre for Hygiene and Technologies of Mediterranean Buffalo Farming and Productions, Istituto Zooprofilattico Sperimentale del Mezzogiorno, Salerno, Italy
| | - Giovanna De Matteis
- Council for Agricultural Research and Economics (CREA)- Research Centre for Animal Production and Aquaculture, Monterotondo (RM), Italy
| | - Francesco Grandoni
- Council for Agricultural Research and Economics (CREA)- Research Centre for Animal Production and Aquaculture, Monterotondo (RM), Italy
| | - Susanna Zinellu
- Department of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, Sassari, Italy
| | - Vincenzo Bove
- National Reference Centre for Hygiene and Technologies of Mediterranean Buffalo Farming and Productions, Istituto Zooprofilattico Sperimentale del Mezzogiorno, Salerno, Italy
| | - Silvia Dei Giudici
- Department of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, Sassari, Italy
| | - Esterina De Carlo
- National Reference Centre for Hygiene and Technologies of Mediterranean Buffalo Farming and Productions, Istituto Zooprofilattico Sperimentale del Mezzogiorno, Salerno, Italy
| | - Giorgio Galiero
- National Reference Centre for Hygiene and Technologies of Mediterranean Buffalo Farming and Productions, Istituto Zooprofilattico Sperimentale del Mezzogiorno, Salerno, Italy
| | - Francesco Napolitano
- Council for Agricultural Research and Economics (CREA)- Research Centre for Animal Production and Aquaculture, Monterotondo (RM), Italy
| | - Alessandra Martucciello
- National Reference Centre for Hygiene and Technologies of Mediterranean Buffalo Farming and Productions, Istituto Zooprofilattico Sperimentale del Mezzogiorno, Salerno, Italy
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Zhang M, Qi L, Li J, Yuan N, Zhai Y, Hao M, Zhou D, Liu W, Jin Y, Wang A. SIRT2 inhibition enhances mitochondrial apoptosis in Brucella-infected bovine placental trophoblast cells. Vet Res 2025; 56:97. [PMID: 40317067 PMCID: PMC12049057 DOI: 10.1186/s13567-025-01518-8] [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: 08/20/2024] [Accepted: 02/11/2025] [Indexed: 05/04/2025] Open
Abstract
Brucella is a successful pathogen that employs a plethora of immune evasion mechanisms. This contributes to pathogenesis and persistence and limits the efficacy of available treatments. An increasing understanding of host‒pathogen interactions suggests that integrating host-directed strategies with existing anti-Brucella treatments could lead to more effective bacterial clearance and a reduction in drug-resistant strains. SIRT2 is a nicotinamide adenine dinucleotide (NAD+)-dependent deacetylase found in mammals. It can deacetylate various transcription factors and regulatory proteins, playing crucial roles in host‒pathogen interactions and pathogen infection-induced apoptosis. In this study, we investigated the role of SIRT2 in Brucella-induced cell apoptosis using bovine placental trophoblast cells. Our results indicate that B. abortus A19 infection upregulates SIRT2 protein expression and significantly induces mitochondrial apoptosis in these cells. Furthermore, inhibition of SIRT2 exacerbates B. abortus A19-induced mitochondrial apoptosis and markedly inhibits intracellular bacterial survival. These results prove the role of SIRT2 in Brucella pathogenesis and the mechanism of action.
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Affiliation(s)
- Mengyu Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling District, Xianyang, 712100, China
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling District, Xianyang, 712100, China
| | - Lin Qi
- College of Veterinary Medicine, Northwest A&F University, Yangling District, Xianyang, 712100, China
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling District, Xianyang, 712100, China
| | - Junmei Li
- College of Veterinary Medicine, Northwest A&F University, Yangling District, Xianyang, 712100, China
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling District, Xianyang, 712100, China
| | - NingQiu Yuan
- College of Veterinary Medicine, Northwest A&F University, Yangling District, Xianyang, 712100, China
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling District, Xianyang, 712100, China
| | - Yunyi Zhai
- College of Veterinary Medicine, Northwest A&F University, Yangling District, Xianyang, 712100, China
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling District, Xianyang, 712100, China
| | - Mingyue Hao
- College of Veterinary Medicine, Northwest A&F University, Yangling District, Xianyang, 712100, China
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling District, Xianyang, 712100, China
| | - Dong Zhou
- College of Veterinary Medicine, Northwest A&F University, Yangling District, Xianyang, 712100, China
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling District, Xianyang, 712100, China
| | - Wei Liu
- College of Veterinary Medicine, Northwest A&F University, Yangling District, Xianyang, 712100, China
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling District, Xianyang, 712100, China
| | - Yaping Jin
- College of Veterinary Medicine, Northwest A&F University, Yangling District, Xianyang, 712100, China
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling District, Xianyang, 712100, China
| | - Aihua Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling District, Xianyang, 712100, China.
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling District, Xianyang, 712100, China.
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Zhao H, Zhang X, Zhang N, Zhu L, Lian H. The interplay between Salmonella and host: Mechanisms and strategies for bacterial survival. CELL INSIGHT 2025; 4:100237. [PMID: 40177681 PMCID: PMC11964643 DOI: 10.1016/j.cellin.2025.100237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2024] [Revised: 01/20/2025] [Accepted: 01/21/2025] [Indexed: 04/05/2025]
Abstract
Salmonella, an intracellular pathogen, infects both humans and animals, causing diverse diseases such as gastroenteritis and enteric fever. The Salmonella type III secretion system (T3SS), encoded within its pathogenicity islands (SPIs), is critical for bacterial virulence by directly delivering multiple effectors into eukaryotic host cells. Salmonella utilizes these effectors to facilitate its survival and replication within the host through modulating cytoskeletal dynamics, inflammatory responses, the biogenesis of Salmonella-containing vacuole (SCV), and host cell survival. Moreover, these effectors also interfere with immune responses via inhibiting innate immunity or antigen presentation. In this review, we summarize the current progress in the survival strategies employed by Salmonella and the molecular mechanisms underlying its interactions with the host. Understanding the interplay between Salmonella and host can enhance our knowledge of the bacterium's pathogenic processes and provide new insights into how it manipulates host cellular physiological activities to ensure its survival.
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Affiliation(s)
- Hongyu Zhao
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan 430071, Hubei, China
| | - Xinyue Zhang
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan 430071, Hubei, China
| | - Ningning Zhang
- Yale Stem Cell Center, New Haven, CT, 06520, USA
- Department of Genetics, Yale University School of Medicine, New Haven, CT, 06510, USA
- Yale Cooperative Center of Excellence in Hematology, New Haven, CT, 12208, USA
| | - Li Zhu
- Department of Internal Medicine, Section of Infectious Diseases, Yale University School of Medicine, New Haven, CT, 06511, USA
| | - Huan Lian
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan 430071, Hubei, China
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Beesetti S. Ubiquitin Ligases in Control: Regulating NLRP3 Inflammasome Activation. FRONT BIOSCI-LANDMRK 2025; 30:25970. [PMID: 40152367 DOI: 10.31083/fbl25970] [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: 08/02/2024] [Revised: 09/04/2024] [Accepted: 09/11/2024] [Indexed: 03/29/2025]
Abstract
Ubiquitin ligases play pivotal roles in the regulation of NLR family pyrin domain containing 3 (NLRP3) inflammasome activation, a critical process in innate immunity and inflammatory responses. This review explores the intricate mechanisms by which various E3 ubiquitin ligases exert both positive and negative influences on NLRP3 inflammasome activity through diverse post-translational modifications. Negative regulation of NLRP3 inflammasome assembly is mediated by several E3 ligases, including F-box and leucine-rich repeat protein 2 (FBXL2), tripartite motif-containing protein 31 (TRIM31), and Casitas B-lineage lymphoma b (Cbl-b), which induce K48-linked ubiquitination of NLRP3, targeting it for proteasomal degradation. Membrane-associated RING-CH 7 (MARCH7) similarly promotes K48-linked ubiquitination leading to autophagic degradation, while RING finger protein (RNF125) induces K63-linked ubiquitination to modulate NLRP3 function. Ariadne homolog 2 (ARIH2) targets the nucleotide-binding domain (NBD) domain of NLRP3, inhibiting its activation, and tripartite motif-containing protein (TRIM65) employs dual K48 and K63-linked ubiquitination to suppress inflammasome assembly. Conversely, Pellino2 exemplifies a positive regulator, promoting NLRP3 inflammasome activation through K63-linked ubiquitination. Additionally, ubiquitin ligases influence other components critical for inflammasome function. TNF receptor-associated factor 3 (TRAF3) mediates K63 polyubiquitination of apoptosis-associated speck-like protein containing a CARD (ASC), facilitating its degradation, while E3 ligases regulate caspase-1 activation and DEAH-box helicase 33 (DHX33)-NLRP3 complex formation through specific ubiquitination events. Beyond direct inflammasome regulation, ubiquitin ligases impact broader innate immune signaling pathways, modulating pattern-recognition receptor responses and dendritic cell maturation. Furthermore, they intricately control NOD1/NOD2 signaling through K63-linked polyubiquitination of receptor-interacting protein 2 (RIP2), crucial for nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) and mitogen-activated protein kinase (MAPK) activation. Furthermore, we explore how various pathogens, including bacteria, viruses, and parasites, have evolved sophisticated strategies to hijack the host ubiquitination machinery, manipulating NLRP3 inflammasome activation to evade immune responses. This comprehensive analysis provides insights into the molecular mechanisms underlying inflammasome regulation and their implications for inflammatory diseases, offering potential avenues for therapeutic interventions targeting the NLRP3 inflammasome. In conclusion, ubiquitin ligases emerge as key regulators of NLRP3 inflammasome activation, exhibiting a complex array of functions that finely tune immune responses. Understanding these regulatory mechanisms not only sheds light on fundamental aspects of inflammation but also offers potential therapeutic avenues for inflammatory disorders and infectious diseases.
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Affiliation(s)
- Swarna Beesetti
- Department of Immunology, St Jude Children's Research Hospital, Memphis, TN 38105, USA
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Wang H, Yang H, Yang J, Liu X, Xie B, Xu M, Wang H, Zhao Y, Liu B, Chen Z. Establishment of a 23S rRNA assay for Brucella and its application in evaluating bacterial growth status. Vet Res Commun 2025; 49:110. [PMID: 39982617 DOI: 10.1007/s11259-025-10676-1] [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: 12/01/2024] [Accepted: 02/10/2025] [Indexed: 02/22/2025]
Abstract
Brucellosis presents notable diagnostic challenges, particularly during the chronic phase of infection, due to the typically low bacterial load in tissues, which may evade detection by conventional Polymerase Chain Reaction (PCR) methods. Traditional PCR techniques are susceptible to cross-reactions and can produce false-positive or false-negative results. Furthermore, bacteriological and serological tests have recognized limitations in sensitivity and specificity, potentially complicating accurate diagnosis. We developed a novel reverse transcription quantitative PCR (RT-qPCR) assay targeting Brucella species' highly abundant and conserved 23S rRNA gene to address these challenges. The 23S rRNA gene was selected as an optimal molecular target due to the approaches' number and genetic stability across Brucella strains. Primers were designed based on a conserved region (Sequence ID: NR_103168.2) to ensure broad applicability, and their specificity was verified through BLAST analysis. A key feature of the 23S-RT-qPCR method is incorporating a reverse transcription step to convert RNA into complementary DNA (cDNA), which may enhance detection sensitivity. Using the Brucella S2 vaccine strain as a template, experimental results indicated that the 23S-RT-qPCR method reduced cycle threshold (Ct) values by approximately 2-3 units (14.67-16.74) compared to conventional qPCR. Statistical analysis using a T-test showed that this reduction was significant (P < 0.05). The performance of the 23S-RT-qPCR method was further evaluated using clinical samples and compared with the IS711 detection method. The 23S-RT-qPCR method demonstrated a lower false-positive rate (2.6%) and false-negative rate (7.6%) compared to the IS711 method, which had a false-positive rate of 5.2% and a false-negative rate of 7.6%. These results suggest that the 23S-RT-qPCR method offers improved sensitivity and specificity, reducing false-positive and false-negative rates in clinical sample analysis. Overall, this method may provide a more reliable approach for diagnosing chronic brucellosis and could have broader applicability in detecting other bacterial pathogens.
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Affiliation(s)
- Hao Wang
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, and Key Laboratory of Ruminant Infectious Disease Prevention and Control (East), Ministry of Agriculture and Rural Affairs, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, 120 Dong ling Road, Shenyang, Liaoning Province, 110866, P. R. China
| | - Haoyan Yang
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, and Key Laboratory of Ruminant Infectious Disease Prevention and Control (East), Ministry of Agriculture and Rural Affairs, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, 120 Dong ling Road, Shenyang, Liaoning Province, 110866, P. R. China
| | - Jianghua Yang
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, and Key Laboratory of Ruminant Infectious Disease Prevention and Control (East), Ministry of Agriculture and Rural Affairs, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, 120 Dong ling Road, Shenyang, Liaoning Province, 110866, P. R. China
| | - Xiang Liu
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, and Key Laboratory of Ruminant Infectious Disease Prevention and Control (East), Ministry of Agriculture and Rural Affairs, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, 120 Dong ling Road, Shenyang, Liaoning Province, 110866, P. R. China
| | - Bin Xie
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, and Key Laboratory of Ruminant Infectious Disease Prevention and Control (East), Ministry of Agriculture and Rural Affairs, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, 120 Dong ling Road, Shenyang, Liaoning Province, 110866, P. R. China
| | - Man Xu
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, and Key Laboratory of Ruminant Infectious Disease Prevention and Control (East), Ministry of Agriculture and Rural Affairs, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, 120 Dong ling Road, Shenyang, Liaoning Province, 110866, P. R. China
| | - Haitong Wang
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, and Key Laboratory of Ruminant Infectious Disease Prevention and Control (East), Ministry of Agriculture and Rural Affairs, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, 120 Dong ling Road, Shenyang, Liaoning Province, 110866, P. R. China
| | - Yutong Zhao
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, and Key Laboratory of Ruminant Infectious Disease Prevention and Control (East), Ministry of Agriculture and Rural Affairs, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, 120 Dong ling Road, Shenyang, Liaoning Province, 110866, P. R. China
| | - Baoshan Liu
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, and Key Laboratory of Ruminant Infectious Disease Prevention and Control (East), Ministry of Agriculture and Rural Affairs, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, 120 Dong ling Road, Shenyang, Liaoning Province, 110866, P. R. China.
| | - Zeliang Chen
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, and Key Laboratory of Ruminant Infectious Disease Prevention and Control (East), Ministry of Agriculture and Rural Affairs, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, 120 Dong ling Road, Shenyang, Liaoning Province, 110866, P. R. China.
- NMPA Key Laboratory for Quality Monitoring and Evaluation of Vaccines and Biological Products, Key Laboratory of Tropical Diseases Control, School of Public Health, Sun Yat-Sen University, Guangzhou, 510275, P.R. China.
- Key Laboratory of Zoonoses Prevention and Control at Universities of Inner Mongolia Autonomous Region, Innovative Institute of Zoonoses, Inner Mongolia Minzu University, Tong Liao, 028000, P.R. China.
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Akmayan I, Oztav S, Coksu I, Abamor ES, Acar S, Ozbek T. Construction of recombinant Omp25 or EipB protein loaded PLGA nanovaccines for Brucellosis protection. NANOTECHNOLOGY 2024; 35:395707. [PMID: 38917779 DOI: 10.1088/1361-6528/ad5b66] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Accepted: 06/25/2024] [Indexed: 06/27/2024]
Abstract
Safe and effective vaccine candidates are needed to address the limitations of existing vaccines against Brucellosis, a disease responsible for substantial economic losses in livestock. The present study aimed to encapsulate recombinant Omp25 and EipB proteins, knowledged antigen properties, into PLGA nanoparticles, characterize synthesized nanoparticles with different methods, and assessed theirin vitro/in vivoimmunostimulatory activities to develop new vaccine candidates. The recombinant Omp25 and EipB proteins produced with recombinant DNA technology were encapsulated into PLGA nanoparticles by double emulsion solvent evaporation technique. The nanoparticles were characterized using FE-SEM, Zeta-sizer, and FT-IR instruments to determine size, morphology, zeta potentials, and polydispersity index values, as well as to analyze functional groups chemically. Additionally, the release profiles and encapsulation efficiencies were assessed using UV-Vis spectroscopy. After loading with recombinant proteins, O-NPs reached sizes of 221.2 ± 5.21 nm, while E-NPs reached sizes of 274.4 ± 9.51 nm. The cumulative release rates of the antigens, monitored until the end of day 14, were determined to be 90.39% for O-NPs and 56.1% for E-NPs. Following the assessment of thein vitrocytotoxicity and immunostimulatory effects of both proteins and nanoparticles on the J774 murine macrophage cells,in vivoimmunization experiments were conducted using concentrations of 16µg ml-1for each protein. Both free antigens and antigen-containing nanoparticles excessively induced humoral immunity by increasing producedBrucella-specific IgG antibody levels for 3 times in contrast to control. Furthermore, it was also demonstrated that vaccine candidates stimulated Th1-mediated cellular immunity as well since they significantly raised IFN-gamma and IL-12 cytokine levels in murine splenocytes rather than IL-4 following to immunization. Additionally, the vaccine candidates conferred higher than 90% protection from the infection according to challenge results. Our findings reveal that PLGA nanoparticles constructed with the encapsulation of recombinant Omp25 or EipB proteins possess great potential to triggerBrucella-specific humoral and cellular immune response.
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Affiliation(s)
- Ilkgul Akmayan
- Department of Molecular Biology and Genetics Faculty of Arts and Sciences, Yildiz Technical University, Esenler, 34220 Istanbul, Turkey
| | - Sedanur Oztav
- Department of Bioengineering, Chemical and Metallurgical Engineering Faculty, Yildiz Technical University, Esenler, 34220 Istanbul, Turkey
| | - Irem Coksu
- Department of Bioengineering, Chemical and Metallurgical Engineering Faculty, Yildiz Technical University, Esenler, 34220 Istanbul, Turkey
| | - Emrah Sefik Abamor
- Department of Bioengineering, Chemical and Metallurgical Engineering Faculty, Yildiz Technical University, Esenler, 34220 Istanbul, Turkey
| | - Serap Acar
- Department of Bioengineering, Chemical and Metallurgical Engineering Faculty, Yildiz Technical University, Esenler, 34220 Istanbul, Turkey
| | - Tulin Ozbek
- Department of Molecular Biology and Genetics Faculty of Arts and Sciences, Yildiz Technical University, Esenler, 34220 Istanbul, Turkey
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Hou S, Kong F, Li X, Xu Y, Chen S, Zhang S, Zhang L, Li T, Fu Y, Li C, Wang W. Role of myeloid-derived suppressor cells in chronic brucellosis. Front Cell Infect Microbiol 2024; 14:1347883. [PMID: 38352057 PMCID: PMC10861671 DOI: 10.3389/fcimb.2024.1347883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 01/15/2024] [Indexed: 02/16/2024] Open
Abstract
Introduction Human brucellosis, a Brucella infection caused most common zoonosis in the world, remains a serious public health burden in China. Brucella chronic infection always causes immunosuppressive status and results in severe organ or tissue damages. The aim of this work was to study the role of the myeloid-derived suppressor cells (MDSCs) in human chronic brucellosis. Methods Fifty cases of chronic brucellosis and 40 healthy individual controls were enrolled in this study. We analyzed the frequency and subsets of MDSCs in PBMC between the chronic brucellosis and healthy control groups by flow cytometry. Furthermore, we also measured the inflammatory-related cytokines in serum samples and the MDSCs inhibition ability to the proliferation of T cells in vitro. Results We found that the frequency of MDSCs in peripheral blood and the level of IL-6 and IL-10 Th2 cytokines and Arginase-1 were significantly increased in chronic brucellosis patients. In addition, we also found that the T cell function was suppressed in vitro by co-culturing with MDSCs from brucellosis patients. Conclusion Our study described an increase of immunosuppressive MDSCs in peripheral blood of chronic brucellosis patients. These results contribute to the understanding of Brucella persistent infection, which may provide an insight for effective treatment of chronic brucellosis patients in clinical practice.
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Affiliation(s)
- Shuiping Hou
- Department of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
- Department of Microbiology, Guangzhou Center for Disease Control and Prevention (CDC), Guangzhou, China
| | - Fandong Kong
- Department of Medical Administration, He Xian Memorial Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Xintong Li
- Department of Blood Components, Guangzhou Blood Center, Guangzhou, China
| | - Yanwen Xu
- Department of Obstetrics, He Xian Memorial Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Shouyi Chen
- Department of Parasitic Disease and Endemic Disease Control and Prevention, Guangzhou Center for Disease Control and Prevention (CDC), Guangzhou, China
| | - Sheng Zhang
- Administration Office, Baoan Central Blood Station, Shenzhen, China
| | - Ling Zhang
- Department of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
| | - Tingting Li
- Department of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
| | - Yongshui Fu
- Clinical Transfusion Institute, Guangzhou Blood Center, Guangzhou, China
| | - Chengyao Li
- Department of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
| | - Wenjing Wang
- Department of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
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