Virulence最新文献

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Immunosuppressants exert antiviral effects against influenza A(H1N1)pdm09 virus via inhibition of nucleic acid synthesis, mRNA splicing, and protein stability. 免疫抑制剂通过抑制核酸合成、mRNA剪接和蛋白质稳定性对甲型 H1N1 pdm09 流感病毒产生抗病毒作用。
IF 5.2 1区 农林科学
Virulence Pub Date : 2024-12-01 Epub Date: 2024-02-06 DOI: 10.1080/21505594.2023.2301242
Xin Wang, Feiyang Pu, Xuanye Yang, Xili Feng, Jiayou Zhang, Kai Duan, Xuanxuan Nian, Zhongren Ma, Xiao-Xia Ma, Xiao-Ming Yang
{"title":"Immunosuppressants exert antiviral effects against influenza A(H1N1)pdm09 virus via inhibition of nucleic acid synthesis, mRNA splicing, and protein stability.","authors":"Xin Wang, Feiyang Pu, Xuanye Yang, Xili Feng, Jiayou Zhang, Kai Duan, Xuanxuan Nian, Zhongren Ma, Xiao-Xia Ma, Xiao-Ming Yang","doi":"10.1080/21505594.2023.2301242","DOIUrl":"10.1080/21505594.2023.2301242","url":null,"abstract":"<p><p>Influenza A virus (IAV) poses a threat to patients receiving immunosuppressive medications since they are more susceptible to infection with severe symptoms, and even death. Understanding the direct effects of immunosuppressants on IAV infection is critical for optimizing immunosuppression in these patients who are infected or at risk of influenza virus infection. We profiled the effects of 10 immunosuppressants, explored the antiviral mechanisms of immunosuppressants, and demonstrated the combined effects of immunosuppressants with the antiviral drug oseltamivir in IAV-infected cell models. We found that mycophenolic acid (MPA) strongly inhibits viral RNA replication via depleting cellular guanosine pool. Treatment with 6-Thioguanine (6-TG) promoted viral protein degradation through a proteasomal pathway. Filgotinib blocked mRNA splicing of matrix protein 2, resulting in decreased viral particle assembly. Furthermore, combined treatment with immunosuppressants and oseltamivir inhibits IAV viral particle production in an additive or synergic manner. Our results suggest that MPA, 6-TG, and filgotinib could be the preferential choices for patients who must take immunosuppressants but are at risk of influenza virus infection.</p>","PeriodicalId":23747,"journal":{"name":"Virulence","volume":null,"pages":null},"PeriodicalIF":5.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10854267/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139088676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
RNA-Seq and miRNA-Seq data from Epstein-Barr virus-infected tree shrews reveal a ceRNA network contributing to immune microenvironment regulation. 来自 Epstein-Barr 病毒感染的树鼩的 RNA-Seq 和 miRNA-Seq 数据揭示了有助于调节免疫微环境的 ceRNA 网络。
IF 5.2 1区 农林科学
Virulence Pub Date : 2024-12-01 Epub Date: 2024-01-29 DOI: 10.1080/21505594.2024.2306795
Wei Xia, Nan Shi, Chaoqian Li, Anzhou Tang
{"title":"RNA-Seq and miRNA-Seq data from Epstein-Barr virus-infected tree shrews reveal a ceRNA network contributing to immune microenvironment regulation.","authors":"Wei Xia, Nan Shi, Chaoqian Li, Anzhou Tang","doi":"10.1080/21505594.2024.2306795","DOIUrl":"10.1080/21505594.2024.2306795","url":null,"abstract":"<p><p>Epstein-Barr virus (EBV) infection in humans is ubiquitous and associated with various diseases. Remodeling of the immune microenvironment is the primary cause of EBV infection and pathogenesis; however, the underlying mechanism has not been fully elucidated. In this study, we used whole-transcriptome RNA-Seq to detect mRNAs, long non-coding RNAs (lncRNA), and microRNA (miRNA) profiles in the control group, 3 days, and 28 days after EBV infection, based on the tree shrew model that we reported previously. First, we estimated the proportion of 22 cell types in each sample using CIBERSORT software and identified 18 high-confidence DElncRNAs related to immune microenvironment regulation after EBV infection. Functional enrichment analysis of these differentially expressed lncRNAs primarily focused on the autophagy, endocytosis, and ferroptosis signalling pathways. Moreover, EBV infection affects miRNA expression patterns, and many miRNAs are silenced. Finally, three competing endogenous RNA regulatory networks were built using lncRNAs that significantly correlated with immune cell types, miRNAs that responded to EBV infection, and potentially targeted the mRNA of the miRNAs. Among them, MRPL42-AS-5 might act as an hsa-miR-296-5p \"sponge\" and compete with target mRNAs, thus increasing mRNA expression level, which could induce immune cell infiltration through the cellular senescence signalling pathway against EBV infection. Overall, we conducted a complete transcriptomic analysis of EBV infection in vivo for the first time and provided a novel perspective for further investigation of EBV-host interactions.</p>","PeriodicalId":23747,"journal":{"name":"Virulence","volume":null,"pages":null},"PeriodicalIF":5.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10826628/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139513783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
HylS', a fragment of truncated hyaluronidase of Streptococcus suis, contributes to immune evasion by interaction with host complement factor C3b. HylS'是猪链球菌截短透明质酸酶的一个片段,它通过与宿主补体因子 C3b 相互作用来逃避免疫。
IF 5.2 1区 农林科学
Virulence Pub Date : 2024-12-01 Epub Date: 2024-02-04 DOI: 10.1080/21505594.2024.2306691
Jiajia Xu, Long Chen, Siqi Pang, Qiuhong Zhang, Simin Deng, Jiaqi Zhu, Xiabing Chen, Paul R Langford, Qi Huang, Rui Zhou, Lu Li
{"title":"HylS', a fragment of truncated hyaluronidase of <i>Streptococcus suis</i>, contributes to immune evasion by interaction with host complement factor C3b.","authors":"Jiajia Xu, Long Chen, Siqi Pang, Qiuhong Zhang, Simin Deng, Jiaqi Zhu, Xiabing Chen, Paul R Langford, Qi Huang, Rui Zhou, Lu Li","doi":"10.1080/21505594.2024.2306691","DOIUrl":"10.1080/21505594.2024.2306691","url":null,"abstract":"<p><p>Pathogenic bacteria have evolved many strategies to evade surveillance and attack by complements. <i>Streptococcus suis</i> is an important zoonotic pathogen that infects humans and pigs. Hyaluronidase (HylA) has been reported to be a potential virulence factor of <i>S. suis</i>. However, in this study, it was discovered that the genomic region encoding HylA of the virulent <i>S. suis</i> strain SC19 and other ST1 strains was truncated into four fragments when aligned with a strain containing intact HylA and possessing hyaluronidase activity. As a result, SC19 had no hyaluronidase activity, but one truncated HylA fragment, designated as HylS,' directly interacted with complement C3b, as confirmed by western ligand blotting, pull-down, and ELISA assays. The deposition of C3b and membrane attack complex (MAC) formation on the surface of a HylS'-deleted mutant (Δ<i>hylS'</i>) was significantly increased compared to wild-type SC19. In human sera and whole blood, Δ<i>hylS'</i> survival was significantly reduced compared to that in SC19. The resistance of Δ<i>hylS'</i> to macrophages and human polymorphonuclear neutrophil PMNs also decreased. In a mouse infection model, Δ<i>hylS'</i> showed reduced lethality and lower bacterial load in the organs compared to that of SC19. We conclude that the truncated hyaluronidase HylS' fragment contributes to complement evasion and the pathogenesis of <i>S. suis</i>.</p>","PeriodicalId":23747,"journal":{"name":"Virulence","volume":null,"pages":null},"PeriodicalIF":5.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10854370/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139513779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Intranasal B5 promotes mucosal defence against Actinobacillus pleuropneumoniae via ameliorating early immunosuppression. 鼻内 B5 可通过改善早期免疫抑制促进粘膜对胸膜肺炎放线杆菌的防御。
IF 5.2 1区 农林科学
Virulence Pub Date : 2024-12-01 Epub Date: 2024-02-20 DOI: 10.1080/21505594.2024.2316459
Jingsheng Huang, Weichao Kang, Dandan Yi, Shuxin Zhu, Yifei Xiang, Chengzhi Liu, Han Li, Dejia Dai, Jieyu Su, Jiakang He, Zhengmin Liang
{"title":"Intranasal B5 promotes mucosal defence against Actinobacillus pleuropneumoniae via ameliorating early immunosuppression.","authors":"Jingsheng Huang, Weichao Kang, Dandan Yi, Shuxin Zhu, Yifei Xiang, Chengzhi Liu, Han Li, Dejia Dai, Jieyu Su, Jiakang He, Zhengmin Liang","doi":"10.1080/21505594.2024.2316459","DOIUrl":"10.1080/21505594.2024.2316459","url":null,"abstract":"<p><p><i>Actinobacillus pleuropneumoniae</i> (APP) is an important pathogen of the porcine respiratory disease complex, which leads to huge economic losses worldwide. We previously demonstrated that <i>Pichia pastoris</i>-producing bovine neutrophil β-defensin-5 (B5) could resist the infection by the bovine intracellular pathogen <i>Mycobacterium bovis</i>. In this study, the roles of synthetic B5 in regulating mucosal innate immune response and protecting against extracellular APP infection were further investigated using a mouse model. Results showed that B5 promoted the production of tumour necrosis factor (TNF)-α, interleukin (IL)-1β, and interferon (IFN)-β in macrophages as well as dendritic cells (DC) and enhanced DC maturation <i>in vitro</i>. Importantly, intranasal B5 was safe and conferred effective protection against APP via reducing the bacterial load in lungs and alleviating pulmonary inflammatory damage. Furthermore, in the early stage of APP infection, we found that intranasal B5 up-regulated the secretion of TNF-α, IL-1β, IL-17, and IL-22; enhanced the rapid recruitment of macrophages, neutrophils, and DC; and facilitated the generation of group 3 innate lymphoid cells in lungs. In addition, B5 activated signalling pathways associated with cellular response to IFN-β and activation of innate immune response in APP-challenged lungs. Collectively, B5 via the intranasal route can effectively ameliorate the immune suppression caused by early APP infection and provide protection against APP. The immunization strategy may be applied to animals or human respiratory bacterial infectious diseases. Our findings highlight the potential importance of B5, enhancing mucosal defence against intracellular bacteria like APP which causes early-phase immune suppression.</p>","PeriodicalId":23747,"journal":{"name":"Virulence","volume":null,"pages":null},"PeriodicalIF":5.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10880497/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139913585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Microbiome analysis reveals the inducing effect of Pseudomonas on prostatic hyperplasia via activating NF-κB signalling. 微生物组分析揭示了假单胞菌通过激活 NF-κB 信号对前列腺增生的诱导作用。
IF 5.2 1区 农林科学
Virulence Pub Date : 2024-12-01 Epub Date: 2024-02-20 DOI: 10.1080/21505594.2024.2313410
Jiaren Li, Youyou Li, Liang Zhou, Hongming Li, Tengfei Wan, Jin Tang, Lei Zhou, Hui Xie, Long Wang
{"title":"Microbiome analysis reveals the inducing effect of <i>Pseudomonas</i> on prostatic hyperplasia via activating NF-κB signalling.","authors":"Jiaren Li, Youyou Li, Liang Zhou, Hongming Li, Tengfei Wan, Jin Tang, Lei Zhou, Hui Xie, Long Wang","doi":"10.1080/21505594.2024.2313410","DOIUrl":"10.1080/21505594.2024.2313410","url":null,"abstract":"<p><p>Benign prostatic hyperplasia (BPH) is a prevalent disease among middle-aged and elderly males, but its pathogenesis remains unclear. Dysbiosis of the microbiome is increasingly recognized as a significant factor in various human diseases. Prostate tissue also contains a unique microbiome, and its dysbiosis has been proposed to contribute to prostate diseases. Here, we obtained prostate tissues and preoperative catheterized urine from 24 BPH individuals, and 8 normal prostate samples as controls, which followed strict aseptic measures. Using metagenomic next-generation sequencing (mNGS), we found the disparities in the microbiome composition between normal and BPH tissues, with <i>Pseudomonas</i> significantly enriched in BPH tissues, as confirmed by fluorescence in situ hybridization (FISH). Additionally, we showed that the prostate microbiome differed from the urine microbiome. In vitro experiments revealed that lipopolysaccharide (LPS) of <i>Pseudomonas</i> activated NF-κB signalling, leading to inflammation, proliferation, and EMT processes, while inhibiting apoptosis in prostatic cells. Overall, our research determines the presence of microbiome dysbiosis in BPH, and suggests that <i>Pseudomonas</i>, as the dominant microflora, may promote the progression of BPH through LPS activation of NF-κB signalling.</p>","PeriodicalId":23747,"journal":{"name":"Virulence","volume":null,"pages":null},"PeriodicalIF":5.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10880505/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139913586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sensitive bioluminescence imaging of cryptococcosis in Galleria mellonella improves antifungal screening under in vivo conditions. 隐球菌的灵敏生物发光成像改善了体内条件下的抗真菌筛选。
IF 5.2 1区 农林科学
Virulence Pub Date : 2024-12-01 Epub Date: 2024-03-13 DOI: 10.1080/21505594.2024.2327883
Eliane Vanhoffelen, Lori Vermoesen, Lauren Michiels, Katrien Lagrou, Agustin Reséndiz-Sharpe, Greetje Vande Velde
{"title":"Sensitive bioluminescence imaging of cryptococcosis in <i>Galleria mellonella</i> improves antifungal screening under <i>in vivo</i> conditions.","authors":"Eliane Vanhoffelen, Lori Vermoesen, Lauren Michiels, Katrien Lagrou, Agustin Reséndiz-Sharpe, Greetje Vande Velde","doi":"10.1080/21505594.2024.2327883","DOIUrl":"10.1080/21505594.2024.2327883","url":null,"abstract":"<p><p><i>Cryptococcus neoformans</i> is an environmental yeast that primarily affects immunocompromised individuals, causing respiratory infections and life-threatening meningoencephalitis. Treatment is complicated by limited antifungal options, with concerns such as adverse effects, dose-limiting toxicity, blood-brain barrier permeability, and resistance development, emphasizing the critical need to optimize and expand current treatment options against invasive cryptococcosis. <i>Galleria mellonella</i> larvae have been introduced as an ethical intermediate for <i>in vivo</i> testing, bridging the gap between <i>in vitro</i> antifungal screening and mouse studies. However, current infection readouts in <i>G. mellonella</i> are indirect, insensitive, or invasive, which hampers the full potential of the model. To address the absence of a reliable non-invasive method for tracking infection, we longitudinally quantified the cryptococcal burden in <i>G. mellonella</i> using bioluminescence imaging (BLI). After infection with firefly luciferase-expressing <i>C. neoformans</i>, the resulting bioluminescence signal was quantitatively validated using colony-forming unit analysis. Longitudinal comparison of BLI to health and survival analysis revealed increased sensitivity of BLI in discriminating cryptococcal burden during early infection. Furthermore, BLI improved the detection of treatment efficacy using first-line antifungals, thereby benchmarking this model for antifungal testing. In conclusion, we introduced BLI as a real-time, quantitative readout of cryptococcal burden in <i>G. mellonella</i> over time, enabling more sensitive and reliable antifungal screening.</p>","PeriodicalId":23747,"journal":{"name":"Virulence","volume":null,"pages":null},"PeriodicalIF":5.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10939141/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140094592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Salmonella virulence protein PagN contributes to the advent of a hyper-replicating cytosolic bacterial population. 沙门氏菌毒力蛋白 PagN 有助于细胞膜细菌群体的过度复制。
IF 5.5 1区 农林科学
Virulence Pub Date : 2024-12-01 Epub Date: 2024-05-28 DOI: 10.1080/21505594.2024.2357670
Sébastien Holbert, Emilie Barilleau, Jin Yan, Jérôme Trotereau, Michael Koczerka, Mégane Charton, Yves Le Vern, Julien Pichon, Guntram A Grassl, Philippe Velge, Agnès Wiedemann
{"title":"The <i>Salmonella</i> virulence protein PagN contributes to the advent of a hyper-replicating cytosolic bacterial population.","authors":"Sébastien Holbert, Emilie Barilleau, Jin Yan, Jérôme Trotereau, Michael Koczerka, Mégane Charton, Yves Le Vern, Julien Pichon, Guntram A Grassl, Philippe Velge, Agnès Wiedemann","doi":"10.1080/21505594.2024.2357670","DOIUrl":"10.1080/21505594.2024.2357670","url":null,"abstract":"<p><p><i>Salmonella enterica</i> subspecies <i>enterica</i> serovar Typhimurium is an intracellular pathogen that invades and colonizes the intestinal epithelium. Following bacterial invasion, <i>Salmonella</i> is enclosed within a membrane-bound vacuole known as a <i>Salmonella</i>-containing vacuole (SCV). However, a subset of <i>Salmonella</i> has the capability to prematurely rupture the SCV and escape, resulting in <i>Salmonella</i> hyper-replication within the cytosol of epithelial cells. A recently published RNA-seq study provides an overview of cytosolic and vacuolar upregulated genes and highlights <i>pagN</i> vacuolar upregulation. Here, using transcription kinetics, protein production profile, and immunofluorescence microscopy, we showed that PagN is exclusively produced by <i>Salmonella</i> in SCV. Gentamicin protection and chloroquine resistance assays were performed to demonstrate that deletion of <i>pagN</i> affects <i>Salmonella</i> replication by affecting the cytosolic bacterial population. This study presents the first example of a <i>Salmonella</i> virulence factor expressed within the endocytic compartment, which has a significant impact on the dynamics of <i>Salmonella</i> cytosolic hyper-replication.</p>","PeriodicalId":23747,"journal":{"name":"Virulence","volume":null,"pages":null},"PeriodicalIF":5.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11135831/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141158777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advances in the pathogenesis and treatment of pneumococcal meningitis. 肺炎球菌脑膜炎的发病机制和治疗进展。
IF 5.5 1区 农林科学
Virulence Pub Date : 2024-12-01 Epub Date: 2024-08-27 DOI: 10.1080/21505594.2024.2387180
Yiyun Xu, Ji Wang, Xiaosong Qin, Jianhua Liu
{"title":"Advances in the pathogenesis and treatment of pneumococcal meningitis.","authors":"Yiyun Xu, Ji Wang, Xiaosong Qin, Jianhua Liu","doi":"10.1080/21505594.2024.2387180","DOIUrl":"10.1080/21505594.2024.2387180","url":null,"abstract":"<p><p><i>Streptococcus pneumoniae</i> is a common pathogen associated with community-acquired bacterial meningitis, characterized by high morbidity and mortality rates. While vaccination reduces the incidence of meningitis, many survivors experience severe brain damage and corresponding sequelae. The pathogenesis of pneumococcal meningitis has not been fully elucidated. Currently, meningitis requires bacterial disruption of the blood - brain barrier, a process that involves the interaction of bacterial surface components with host cells and various inflammatory responses. This review delineates the global prevalence, pathogenesis, and treatment strategies of pneumococcal meningitis. The objective is to enhance the thorough comprehension of the clinical manifestations and biological mechanisms of the disease, thereby enabling more efficient prevention, diagnosis, and therapeutic interventions.</p>","PeriodicalId":23747,"journal":{"name":"Virulence","volume":null,"pages":null},"PeriodicalIF":5.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11364070/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142081762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Acute hepatitis of unknown origin in children: Should we move the discussion from a purely infectious origin also to other plausible causes? 原因不明的儿童急性肝炎:我们是否应将讨论从纯粹的感染性病因转向其他可能的病因?
IF 5.2 1区 农林科学
Virulence Pub Date : 2024-12-01 Epub Date: 2024-02-22 DOI: 10.1080/21505594.2024.2318582
Pietro Vajro, Claudia Mandato, Björn Fischler
{"title":"Acute hepatitis of unknown origin in children: Should we move the discussion from a purely infectious origin also to other plausible causes?","authors":"Pietro Vajro, Claudia Mandato, Björn Fischler","doi":"10.1080/21505594.2024.2318582","DOIUrl":"10.1080/21505594.2024.2318582","url":null,"abstract":"","PeriodicalId":23747,"journal":{"name":"Virulence","volume":null,"pages":null},"PeriodicalIF":5.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10896148/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139933143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Autophagy-related protein PlATG2 regulates the vegetative growth, sporangial cleavage, autophagosome formation, and pathogenicity of peronophythora litchii. 自噬相关蛋白PlATG2调控立枯丝核菌的无性生长、孢子囊裂解、自噬体形成和致病性。
IF 5.2 1区 农林科学
Virulence Pub Date : 2024-12-01 Epub Date: 2024-03-04 DOI: 10.1080/21505594.2024.2322183
Lin Lv, Chengdong Yang, Xue Zhang, Taixu Chen, Manfei Luo, Ge Yu, Qinghe Chen
{"title":"Autophagy-related protein PlATG2 regulates the vegetative growth, sporangial cleavage, autophagosome formation, and pathogenicity of <i>peronophythora litchii</i>.","authors":"Lin Lv, Chengdong Yang, Xue Zhang, Taixu Chen, Manfei Luo, Ge Yu, Qinghe Chen","doi":"10.1080/21505594.2024.2322183","DOIUrl":"10.1080/21505594.2024.2322183","url":null,"abstract":"<p><p>Autophagy is an intracellular degradation process that is important for the development and pathogenicity of phytopathogenic fungi and for the defence response of plants. However, the molecular mechanisms underlying autophagy in the pathogenicity of the plant pathogenic oomycete <i>Peronophythora litchii</i>, the causal agent of litchi downy blight, have not been well characterized. In this study, the autophagy-related protein ATG2 homolog, PlATG2, was identified and characterized using a CRISPR/Cas9-mediated gene replacement strategy in <i>P. litchii</i>. A monodansylcadaverine (MDC) staining assay indicated that deletion of <i>PlATG2</i> abolished autophagosome formation. Infection assays demonstrated that Δ<i>Platg2</i> mutants showed significantly impaired pathogenicity in litchi leaves and fruits. Further studies have revealed that PlATG2 participates in radial growth and asexual/sexual development of <i>P. litchii</i>. Moreover, zoospore release and cytoplasmic cleavage of sporangia were considerably lower in the Δ<i>Platg2</i> mutants than in the wild-type strain by FM4-64 staining. Taken together, our results revealed that PlATG2 plays a pivotal role in vegetative growth, sporangia and oospore production, zoospore release, sporangial cleavage, and plant infection of <i>P. litchii</i>. This study advances our understanding of the pathogenicity mechanisms of the phytopathogenic oomycete <i>P. litchii</i> and is conducive to the development of effective control strategies.</p>","PeriodicalId":23747,"journal":{"name":"Virulence","volume":null,"pages":null},"PeriodicalIF":5.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10913709/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140029126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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