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Abdelbaky HH, Shimoda N, Akthar I, Nakamura S, Hasan MH, Ushio N, Miyamoto A, Nishikawa Y. In vitro regulation of gene expression of pregnancy-associated proteins and cytokines in bovine endometrial epithelial cells and bovine trophoblastic cells by infection with Neospora caninum. Parasitol Int 2024; 101:102898. [PMID: 38648880 DOI: 10.1016/j.parint.2024.102898] [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: 10/18/2023] [Revised: 04/17/2024] [Accepted: 04/19/2024] [Indexed: 04/25/2024]
Abstract
Abortion caused by the parasite Neospora caninum is an important threat to the livestock industry worldwide. Trophoblasts and caruncular cells play major roles in initiating innate immune responses and controlling parasite infection at the fetal-maternal interface. In the present study, bovine uterine epithelial cells (BUECs) and bovine trophoblastic (BT) cells treated with bovine interferon-gamma (IFN-γ), IFN-alpha (IFN-α) and IFN-tau (IFN-τ) followed by infection with N. caninum were examined by measuring the mRNA expression levels of numerous pregnancy-associated proteins and observing parasite growth to elucidate the host-parasite interaction at the uteroplacental region. N. caninum infection increased the expression of prolactin-related protein 1 (PRP1), pregnancy-associated glycoprotein 1 (PAG1), and cytokines (TNF-α, IL-8 and IL-10) in BUECs and of IL-8 in BT cells. Bovine IFN-γ inhibited IL-8 and TNF-α expression in BUECs and IL-8 in BT cells. In contrast, the expression of the interferon-stimulated gene OAS1 was significantly increased by treatment of the infected BT cells with IFN-γ. However, treatment with bovine IFNs did not inhibit N. caninum growth in either cell line. In conclusion, our results suggest that bovine IFN-γ plays a crucial role in control of pathogenesis in uterus and induction of inflammatory response in the placental region following N. caninum infection, rather than growth inhibition of the parasites.
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Affiliation(s)
- Hanan H Abdelbaky
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-Cho, Obihiro, Hokkaido 080-8555, Japan
| | - Naomi Shimoda
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-Cho, Obihiro, Hokkaido 080-8555, Japan
| | - Ihshan Akthar
- Global AgroMedicine Research Center (GAMRC), Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
| | - Shu Nakamura
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-Cho, Obihiro, Hokkaido 080-8555, Japan
| | - Md Hasibul Hasan
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-Cho, Obihiro, Hokkaido 080-8555, Japan
| | - Nanako Ushio
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-Cho, Obihiro, Hokkaido 080-8555, Japan
| | - Akio Miyamoto
- Global AgroMedicine Research Center (GAMRC), Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
| | - Yoshifumi Nishikawa
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-Cho, Obihiro, Hokkaido 080-8555, Japan.
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Cimini M, Hansmann UHE, Gonzalez C, Chesney AD, Truongcao MM, Gao E, Wang T, Roy R, Forte E, Mallaredy V, Thej C, Magadum A, Joladarashi D, Benedict C, Koch WJ, Tükel Ç, Kishore R. Podoplanin Positive Cell-derived Extracellular Vesicles Contribute to Cardiac Amyloidosis After Myocardial Infarction. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.28.601297. [PMID: 39005419 PMCID: PMC11244852 DOI: 10.1101/2024.06.28.601297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/16/2024]
Abstract
Background Amyloidosis is a major long-term complication of chronic disease; however, whether it represents one of the complications of post-myocardial infarction (MI) is yet to be fully understood. Methods Using wild-type and knocked-out MI mouse models and characterizing in vitro the exosomal communication between bone marrow-derived macrophages and activated mesenchymal stromal cells (MSC) isolated after MI, we investigated the mechanism behind Serum Amyloid A 3 (SAA3) protein overproduction in injured hearts. Results Here, we show that amyloidosis occurs after MI and that amyloid fibers are composed of macrophage-derived SAA3 monomers. SAA3 overproduction in macrophages is triggered by exosomal communication from a subset of activated MSC, which, in response to MI, acquire the expression of a platelet aggregation-inducing type I transmembrane glycoprotein named Podoplanin (PDPN). Cardiac MSC PDPN+ communicate with and activate macrophages through their extracellular vesicles or exosomes. Specifically, MSC PDPN+ derived exosomes (MSC PDPN+ Exosomes) are enriched in SAA3 and exosomal SAA3 protein engages with Toll-like receptor 2 (TRL2) on macrophages, triggering an overproduction and impaired clearance of SAA3 proteins, resulting in aggregation of SAA3 monomers as rigid amyloid deposits in the extracellular space. The onset of amyloid fibers deposition alongside extra-cellular-matrix (ECM) proteins in the ischemic heart exacerbates the rigidity and stiffness of the scar, hindering the contractility of viable myocardium and overall impairing organ function. Using SAA3 and TLR2 deficient mouse models, we show that SAA3 delivered by MSC PDPN+ exosomes promotes post-MI amyloidosis. Inhibition of SAA3 aggregation via administration of a retro-inverso D-peptide, specifically designed to bind SAA3 monomers, prevents the deposition of SAA3 amyloid fibrils, positively modulates the scar formation, and improves heart function post-MI. Conclusion Overall, our findings provide mechanistic insights into post-MI amyloidosis and suggest that SAA3 may be an attractive target for effective scar reversal after ischemic injury and a potential target in multiple diseases characterized by a similar pattern of inflammation and amyloid deposition. NOVELTY AND SIGNIFICANCE What is known? Accumulation of rigid amyloid structures in the left ventricular wall impairs ventricle contractility.After myocardial infarction cardiac Mesenchymal Stromal Cells (MSC) acquire Podoplanin (PDPN) to better interact with immune cells.Amyloid structures can accumulate in the heart after chronic inflammatory conditions. What information does this article contribute? Whether accumulation of cumbersome amyloid structures in the ischemic scar impairs left ventricle contractility, and scar reversal after myocardial infarction (MI) has never been investigated.The pathophysiological relevance of PDPN acquirement by MSC and the functional role of their secreted exosomes in the context of post-MI cardiac remodeling has not been investigated.Amyloid structures are present in the scar after ischemia and are composed of macrophage-derived Serum Amyloid A (SAA) 3 monomers, although mechanisms of SAA3 overproduction is not established. SUMMARY OF NOVELTY AND SIGNIFICANCE Here, we report that amyloidosis, a secondary phenomenon of an already preexisting and prolonged chronic inflammatory condition, occurs after MI and that amyloid structures are composed of macrophage-derived SAA3 monomers. Frequently studied cardiac amyloidosis are caused by aggregation of immunoglobulin light chains, transthyretin, fibrinogen, and apolipoprotein in a healthy heart as a consequence of systemic chronic inflammation leading to congestive heart failure with various types of arrhythmias and tissue stiffness. Although chronic MI is considered a systemic inflammatory condition, studies regarding the possible accumulation of amyloidogenic proteins after MI and the mechanisms involved in that process are yet to be reported. Here, we show that SAA3 overproduction in macrophages is triggered in a Toll-like Receptor 2 (TLR2)-p38MAP Kinase-dependent manner by exosomal communication from a subset of activated MSC, which, in response to MI, express a platelet aggregation-inducing type I transmembrane glycoprotein named Podoplanin. We provide the full mechanism of this phenomenon in murine models and confirm SAA3 amyloidosis in failing human heart samples. Moreover, we developed a retro-inverso D-peptide therapeutic approach, "DRI-R5S," specifically designed to bind SAA3 monomers and prevent post-MI aggregation and deposition of SAA3 amyloid fibrils without interfering with the innate immune response.
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Rahamani AA, Horn S, Ritter M, Feichtner A, Osei-Mensah J, Serwaa Opoku V, Batsa Debrah L, Marandu TF, Haule A, Mhidze J, Ngenya A, Demetrius M, Klarmann-Schulz U, Hoelscher M, Geldmacher C, Hoerauf A, Kalinga A, Debrah AY, Kroidl I. Stage-Dependent Increase of Systemic Immune Activation and CCR5 +CD4 + T Cells in Filarial Driven Lymphedema in Ghana and Tanzania. Pathogens 2023; 12:809. [PMID: 37375499 DOI: 10.3390/pathogens12060809] [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: 03/31/2023] [Revised: 05/12/2023] [Accepted: 05/29/2023] [Indexed: 06/29/2023] Open
Abstract
Chronic lymphedema caused by infection of Wuchereria bancrofti is a disfiguring disease that leads to physical disability, stigmatization, and reduced quality of life. The edematous changes occur mainly on the lower extremities and can progress over time due to secondary bacterial infections. In this study, we characterized participants with filarial lymphedema from Ghana and Tanzania as having low (stage 1-2), intermediate (stage 3-4), or advanced (stage 5-7) lymphedema to determine CD4+ T cell activation patterns and markers associated with immune cell exhaustion. A flow cytometry-based analysis of peripheral whole blood revealed different T cell phenotypes within participants with different stages of filarial lymphedema. In detail, increased frequencies of CD4+HLA-DR+CD38+ T cells were associated with higher stages of filarial lymphedema in patients from Ghana and Tanzania. In addition, significantly increased frequencies of CCR5+CD4+ T cells were seen in Ghanaian participants with advanced LE stages, which was not observed in the Tanzanian cohort. The frequencies of CD8+PD-1+ T cells were augmented in individuals with higher stage lymphedema in both countries. These findings show distinct activation and exhaustion patterns in lymphedema patients but reveal that immunological findings differ between West and East African countries.
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Affiliation(s)
- Abu Abudu Rahamani
- Filariasis Unit, Kumasi Centre for Collaborative Research in Tropical Medicine (KCCR), UPO, PMB, Kumasi 00233, Ghana
- German-West African Centre for Global Health and Pandemic Prevention (G-WAC), Partner Site, UPO, PMB, Kumasi 00233, Ghana
- Department of Clinical Microbiology, School of Medicine and Dentistry, Kwame Nkrumah University of Science and Technology, UPO, PMB, Kumasi 00233, Ghana
| | - Sacha Horn
- Division of Infectious Diseases and Tropical Medicine, University Hospital Munich, Ludwig-Maximilians-Universität (LMU), 80802 Munich, Germany
| | - Manuel Ritter
- Institute for Medical Microbiology, Immunology and Parasitology (IMMIP), University Hospital Bonn, 53127 Bonn, Germany
| | - Anja Feichtner
- Division of Infectious Diseases and Tropical Medicine, University Hospital Munich, Ludwig-Maximilians-Universität (LMU), 80802 Munich, Germany
- German Centre for Infection Research (DZIF), Neglected Tropical Diseases, Partner Site, 80802 Munich, Germany
| | - Jubin Osei-Mensah
- Filariasis Unit, Kumasi Centre for Collaborative Research in Tropical Medicine (KCCR), UPO, PMB, Kumasi 00233, Ghana
- German-West African Centre for Global Health and Pandemic Prevention (G-WAC), Partner Site, UPO, PMB, Kumasi 00233, Ghana
- Department of Pathobiology, School of Veterinary Medicine, Kwame Nkrumah University of Science and Technology, UPO, PMB, Kumasi 00233, Ghana
| | - Vera Serwaa Opoku
- Filariasis Unit, Kumasi Centre for Collaborative Research in Tropical Medicine (KCCR), UPO, PMB, Kumasi 00233, Ghana
- German-West African Centre for Global Health and Pandemic Prevention (G-WAC), Partner Site, UPO, PMB, Kumasi 00233, Ghana
| | - Linda Batsa Debrah
- Filariasis Unit, Kumasi Centre for Collaborative Research in Tropical Medicine (KCCR), UPO, PMB, Kumasi 00233, Ghana
- German-West African Centre for Global Health and Pandemic Prevention (G-WAC), Partner Site, UPO, PMB, Kumasi 00233, Ghana
- Department of Clinical Microbiology, School of Medicine and Dentistry, Kwame Nkrumah University of Science and Technology, UPO, PMB, Kumasi 00233, Ghana
| | - Thomas F Marandu
- Mbeya Medical Research Center (MMRC), Department of Immunology, National Institute for Medical Research (NIMR), Mbeya 53107, Tanzania
- Department of Microbiology and Immunology, Mbeya College of Health and Allied Sciences (UDSM-MCHAS), University of Dar es Salaam, Mbeya 53107, Tanzania
| | - Antelmo Haule
- Mbeya Medical Research Center (MMRC), Department of Immunology, National Institute for Medical Research (NIMR), Mbeya 53107, Tanzania
| | - Jacklina Mhidze
- Mbeya Medical Research Center (MMRC), Department of Immunology, National Institute for Medical Research (NIMR), Mbeya 53107, Tanzania
| | - Abdallah Ngenya
- National Institute of Medical Research (NIMR)-Headquarters, Dar es Salaam 11101, Tanzania
| | - Max Demetrius
- National Institute of Medical Research (NIMR)-Headquarters, Dar es Salaam 11101, Tanzania
| | - Ute Klarmann-Schulz
- Institute for Medical Microbiology, Immunology and Parasitology (IMMIP), University Hospital Bonn, 53127 Bonn, Germany
- German Centre for Infection Research (DZIF), Neglected Tropical Diseases, Partner Site, Bonn-Cologne, 53127 Bonn, Germany
| | - Michael Hoelscher
- Division of Infectious Diseases and Tropical Medicine, University Hospital Munich, Ludwig-Maximilians-Universität (LMU), 80802 Munich, Germany
- German Centre for Infection Research (DZIF), Neglected Tropical Diseases, Partner Site, 80802 Munich, Germany
- Fraunhofer ITMP, Immunology, Infection and Pandemic Research, 80802 Munich, Germany
| | - Christof Geldmacher
- Division of Infectious Diseases and Tropical Medicine, University Hospital Munich, Ludwig-Maximilians-Universität (LMU), 80802 Munich, Germany
- German Centre for Infection Research (DZIF), Neglected Tropical Diseases, Partner Site, 80802 Munich, Germany
| | - Achim Hoerauf
- Institute for Medical Microbiology, Immunology and Parasitology (IMMIP), University Hospital Bonn, 53127 Bonn, Germany
- German Centre for Infection Research (DZIF), Neglected Tropical Diseases, Partner Site, Bonn-Cologne, 53127 Bonn, Germany
- German-West African Centre for Global Health and Pandemic Prevention (G-WAC), Partner Site, 53127 Bonn, Germany
| | - Akili Kalinga
- National Institute of Medical Research (NIMR)-Headquarters, Dar es Salaam 11101, Tanzania
| | - Alexander Y Debrah
- Filariasis Unit, Kumasi Centre for Collaborative Research in Tropical Medicine (KCCR), UPO, PMB, Kumasi 00233, Ghana
- German-West African Centre for Global Health and Pandemic Prevention (G-WAC), Partner Site, UPO, PMB, Kumasi 00233, Ghana
- Faculty of Allied Health Sciences, Kwame Nkrumah University of Science and Technology, UPO, PMB, Kumasi 00233, Ghana
| | - Inge Kroidl
- Division of Infectious Diseases and Tropical Medicine, University Hospital Munich, Ludwig-Maximilians-Universität (LMU), 80802 Munich, Germany
- German Centre for Infection Research (DZIF), Neglected Tropical Diseases, Partner Site, 80802 Munich, Germany
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Abdelbaky HH, Mitsuhashi S, Watanabe K, Ushio N, Miyakawa M, Furuoka H, Nishikawa Y. Involvement of chemokine receptor CXCR3 in the defense mechanism against Neospora caninum infection in C57BL/6 mice. Front Microbiol 2023; 13:1045106. [PMID: 36704563 PMCID: PMC9873264 DOI: 10.3389/fmicb.2022.1045106] [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: 09/15/2022] [Accepted: 12/14/2022] [Indexed: 01/11/2023] Open
Abstract
C-X-C motif chemokine receptor 3 (CXCR3) is an important receptor controlling the migration of leukocytes, although there is no report regarding its role in Neospora caninum infection. Herein, we investigated the relevance of CXCR3 in the resistance mechanism to N. caninum infection in mice. Wild-type (WT) C57BL/6 mice and CXCR3-knockout (CXCR3KO) mice were used in all experiments. WT mice displayed a high survival rate (100%), while 80% of CXCR3KO mice succumbed to N. caninum infection within 50 days. Compared with WT mice, CXCR3KO mice exhibited significantly lower body weights and higher clinical scores at the subacute stage of infection. Flow cytometric analysis revealed CXCR3KO mice as having significantly increased proportions and numbers of CD11c-positive cells compared with WT mice at 5 days post infection (dpi). However, levels of interleukin-6 and interferon-γ in serum and ascites were similar in all groups at 5 dpi. Furthermore, no differences in parasite load were detected in brain, spleen, lungs or liver tissue of CXCR3KO and WT mice at 5 and 21 dpi. mRNA analysis of brain tissue collected from infected mice at 30 dpi revealed no changes in expression levels of inflammatory response genes. Nevertheless, the brain tissue of infected CXCR3KO mice displayed significant necrosis and microglial activation compared with that of WT mice at 21 dpi. Interestingly, the brain tissue of CXCR3KO mice displayed significantly lower numbers of FoxP3+ cells compared with the brain tissue of WT mice at 30 dpi. Accordingly, our study suggests that the lack of active regulatory T cells in brain tissue of infected CXCR3KO mice is the main cause of these mice having severe necrosis and lower survival compared with WT mice. Thus, CXCR3+ regulatory T cells may play a crucial role in control of neosporosis.
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Affiliation(s)
- Hanan H. Abdelbaky
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Shuichiro Mitsuhashi
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Kenichi Watanabe
- Division of Pathobiological Science, Department of Basic Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Nanako Ushio
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Miku Miyakawa
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Hidefumi Furuoka
- Laboratory of Veterinary Pathology, Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Yoshifumi Nishikawa
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan,*Correspondence: Yoshifumi Nishikawa, ✉
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Yuan H, Zhang XX, Yang ZP, Wang XH, Mahmmod YS, Zhang P, Yan ZJ, Wang YY, Ren ZW, Guo QY, Yuan ZG. Unveiling of brain transcriptome of masked palm civet (Paguma larvata) with chronic infection of Toxoplasma gondii. Parasit Vectors 2022; 15:263. [PMID: 35871661 PMCID: PMC9308931 DOI: 10.1186/s13071-022-05378-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 06/15/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The aim of this study was to gain an understanding of the transcriptomic changes that occur in a wild species when infected with Toxoplasma gondii. The masked palm civet, an artifically domesticated animal, was used as the model of a wild species. Transcriptome analysis was used to study alterations in gene expression in the domesticated masked palm civet after chronic infection with T. gondii. METHODS Masked palm civets were infected with 105 T. gondii cysts and their brain tissue collected after 4 months of infection. RNA sequencing (RNA-Seq) was used to gain insight into the spectrum of genes that were differentially expressed due to infection. Quantitative reverse-transcription PCR (qRT-PCR) was also used to validate the level of expression of a set of differentially expressed genes (DEGs) obtained by sequencing. RESULTS DEGs were screened from the sequencing results and analyzed. A total of 2808 DEGs were detected, of which 860 were upregulated and 1948 were downregulated. RNA-Seq results were confirmed by qRT-PCR. DEGs were mainly enriched in cellular process and metabolic process based on gene ontology enrichment analysis. Kyoto Encyclopedia of Genes and Genomes pathway analysis showed that transcriptional changes in the brain of infected masked palm civets evolved over the course of infection and that DEGs were mainly enriched in the signal transduction, immune system processes, transport and catabolic pathways. Finally, 10 essential driving genes were identified from the immune signaling pathway. CONCLUSIONS This study revealed novel host genes which may provide target genes for the development of new therapeutics and detection methods for T. gondii infection in wild animals.
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Affiliation(s)
- Hao Yuan
- grid.413251.00000 0000 9354 9799College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi, 830052 Xinjiang People’s Republic of China ,grid.20561.300000 0000 9546 5767College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642 Guangdong People’s Republic of China ,grid.20561.300000 0000 9546 5767Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, 510642 People’s Republic of China ,grid.20561.300000 0000 9546 5767Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, 510642 Guangdong People’s Republic of China
| | - Xiu-Xiang Zhang
- grid.20561.300000 0000 9546 5767College of Agriculture, South China Agricultural University, Guangzhou, 510642 Guangdong People’s Republic of China
| | - Zi-Peng Yang
- grid.20561.300000 0000 9546 5767College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642 Guangdong People’s Republic of China ,grid.20561.300000 0000 9546 5767Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, 510642 People’s Republic of China
| | - Xiao-Hu Wang
- grid.135769.f0000 0001 0561 6611Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640 Guangdong People’s Republic of China
| | - Yasser S. Mahmmod
- grid.31451.320000 0001 2158 2757Infectious Diseases, Department of Animal Medicine, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511 Sharika Egypt ,grid.444463.50000 0004 1796 4519Veterinary Sciences Division, Faculty of Health Sciences, Higher Colleges of Technology, 17155- Al Ain, Abu Dhabi, United Arab Emirates
| | - Pian Zhang
- grid.20561.300000 0000 9546 5767College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642 Guangdong People’s Republic of China
| | - Zi-Jing Yan
- grid.20561.300000 0000 9546 5767College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642 Guangdong People’s Republic of China
| | - Yan-Yun Wang
- grid.20561.300000 0000 9546 5767College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642 Guangdong People’s Republic of China
| | - Zhao-Wen Ren
- grid.20561.300000 0000 9546 5767College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642 Guangdong People’s Republic of China
| | - Qing-Yong Guo
- College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi, 830052, Xinjiang, People's Republic of China.
| | - Zi-Guo Yuan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, Guangdong, People's Republic of China. .,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, 510642, People's Republic of China.
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Sasai M, Yamamoto M. Anti-toxoplasma host defense systems and the parasitic counterdefense mechanisms. Parasitol Int 2022; 89:102593. [DOI: 10.1016/j.parint.2022.102593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 04/12/2022] [Accepted: 04/26/2022] [Indexed: 10/18/2022]
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Transcriptomic Analysis of the Effects of Chemokine Receptor CXCR3 Deficiency on Immune Responses in the Mouse Brain during Toxoplasma gondii Infection. Microorganisms 2021; 9:microorganisms9112340. [PMID: 34835465 PMCID: PMC8620038 DOI: 10.3390/microorganisms9112340] [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: 11/01/2021] [Accepted: 11/06/2021] [Indexed: 11/16/2022] Open
Abstract
The obligate intracellular parasite Toxoplasma gondii infects warm-blooded animals, including humans. We previously revealed through a whole-brain transcriptome analysis that infection with T. gondii in mice causes immune response-associated genes to be upregulated, for instance, chemokines and chemokine receptors such as CXC chemokine receptor 3 (CXCR3) and its ligand CXC chemokine ligand 10 (CXCL10). Here, we describe the effect of CXCR3 on responses against T. gondii infection in the mouse brain. In vivo assays using CXCR3-deficient mice showed that the absence of CXCR3 delayed the normal recovery of body weight and increased the brain parasite burden, suggesting that CXCR3 plays a role in the control of pathology in the brain, the site where chronic infection occurs. Therefore, to further analyze the function of CXCR3 in the brain, we profiled the gene expression patterns of primary astrocytes and microglia by RNA sequencing and subsequent analyses. CXCR3 deficiency impaired the normal upregulation of immune-related genes during T. gondii infection, in astrocytes and microglia alike. Collectively, our results suggest that the immune-related genes upregulated by CXCR3 perform a particular role in controlling pathology when the host is chronically infected with T. gondii in the brain.
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Ellwanger JH, Kaminski VDL, Rodrigues AG, Kulmann-Leal B, Chies JAB. CCR5 and CCR5Δ32 in bacterial and parasitic infections: Thinking chemokine receptors outside the HIV box. Int J Immunogenet 2020; 47:261-285. [PMID: 32212259 DOI: 10.1111/iji.12485] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 03/02/2020] [Accepted: 03/06/2020] [Indexed: 12/14/2022]
Abstract
The CCR5 molecule was reported in 1996 as the main HIV-1 co-receptor. In that same year, the CCR5Δ32 genetic variant was described as a strong protective factor against HIV-1 infection. These findings led to extensive research regarding the CCR5, culminating in critical scientific advances, such as the development of CCR5 inhibitors for the treatment of HIV infection. Recently, the research landscape surrounding CCR5 has begun to change. Different research groups have realized that, since CCR5 has such important effects in the chemokine system, it could also affect other different physiological systems. Therefore, the effect of reduced CCR5 expression due to the presence of the CCR5Δ32 variant began to be further studied. Several studies have investigated the role of CCR5 and the impacts of CCR5Δ32 on autoimmune and inflammatory diseases, various types of cancer, and viral diseases. However, the role of CCR5 in diseases caused by bacteria and parasites is still poorly understood. Therefore, the aim of this article is to review the role of CCR5 and the effects of CCR5Δ32 on bacterial (brucellosis, osteomyelitis, pneumonia, tuberculosis and infection by Chlamydia trachomatis) and parasitic infections (toxoplasmosis, leishmaniasis, Chagas disease and schistosomiasis). Basic information about each of these infections was also addressed. The neglected role of CCR5 in fungal disease and emerging studies regarding the action of CCR5 on regulatory T cells are briefly covered in this review. Considering the "renaissance of CCR5 research," this article is useful for updating researchers who develop studies involving CCR5 and CCR5Δ32 in different infectious diseases.
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Affiliation(s)
- Joel Henrique Ellwanger
- Laboratory of Immunobiology and Immunogenetics, Department of Genetics, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, Brazil
| | - Valéria de Lima Kaminski
- Laboratory of Immunobiology and Immunogenetics, Department of Genetics, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, Brazil
| | - Andressa Gonçalves Rodrigues
- Laboratory of Immunobiology and Immunogenetics, Department of Genetics, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, Brazil
| | - Bruna Kulmann-Leal
- Laboratory of Immunobiology and Immunogenetics, Department of Genetics, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, Brazil
| | - José Artur Bogo Chies
- Laboratory of Immunobiology and Immunogenetics, Department of Genetics, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, Brazil
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Zhou B, Fu Y, Zhang H, Wang X, Jin G, Xu J, Liu Q, Liu J. Functional characterization of acyl-CoA binding protein in Neospora caninum. Parasit Vectors 2020; 13:85. [PMID: 32070415 PMCID: PMC7029560 DOI: 10.1186/s13071-020-3967-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 02/13/2020] [Indexed: 11/10/2022] Open
Abstract
Background Lipid metabolism is pivotal for the growth of apicomplexan parasites. Lipid synthesis requires bulk carbon skeleton acyl-CoAs, the transport of which depends on the acyl-CoA binding protein (ACBP). In Neospora caninum, the causative agent of neosporosis, the FASII pathway is required for growth and pathogenicity. However, little is known about the fatty acid transport mechanism in N. caninum. Methods We have identified a cytosolic acyl-CoA binding protein, with highly conserved amino acid residues and a typical acyl-CoA binding domain in N. caninum. The recombinant NcACBP protein was expressed to verify the binding activities of NcACBP in vitro, and the heterologous expression of NcACBP in Δacbp yeast in vivo. Lipid extraction from ΔNcACBP or the wild-type of N. caninum was analyzed by GC-MS or TLC. Furthermore, transcriptome analysis was performed to compare the gene expression in different strains. Results The NcACBP recombinant protein was able to specifically bind acyl-CoA esters in vitro. A yeast complementation assay showed that heterologous expression of NcACBP rescued the phenotypic defects in Δacbp yeast, indicating of the binding activity of NcACBP in vivo. The disruption of NcACBP did not perturb the parasite’s growth but enhanced its pathogenicity in mice. The lipidomic analysis showed that disruption of NcACBP caused no obvious changes in the overall abundance and turnover of fatty acids while knockout resulted in the accumulation of triacylglycerol. Transcriptional analysis of ACBP-deficient parasites revealed differentially expressed genes involved in a wide range of biological processes such as lipid metabolism, posttranslational modification, and membrane biogenesis. Conclusions Our study demonstrated that genetic ablation of NcACBP did not impair the survival and growth phenotype of N. caninum but enhanced its pathogenicity in mice. This deletion did not affect the overall fatty acid composition but modified the abundance of TAG. The loss of NcACBP resulted in global changes in the expression of multiple genes. This study provides a foundation for elucidating the molecular mechanism of lipid metabolism in N. caninum.
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Affiliation(s)
- Bingxin Zhou
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China
| | - Yong Fu
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China
| | - Heng Zhang
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China
| | - Xianmei Wang
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China
| | - Gaowei Jin
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China
| | - Jianhai Xu
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China
| | - Qun Liu
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China.,Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China
| | - Jing Liu
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China. .,Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China.
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