London calling: The 5th UK Cellular Microbiology Network Meeting DOI Creative Commons
Serge Mostowy, Charlotte Odendall, Daniel Humphreys

и другие.

Molecular Microbiology, Год журнала: 2023, Номер 120(6), С. 906 - 909

Опубликована: Ноя. 16, 2023

The UK Cellular Microbiology Network Meeting started in 2019 with the vision of supporting and enhancing cellular microbiology community Europe. Since its inception, network meeting has emerged as an important platform for infection cell biologists to inspire transformative collaborations novel research agendas. is highly interactive focused on promoting early career researchers discovery science. fifth this series was held 19–20 June 2023 at iconic London School Hygiene & Tropical Medicine (LSHTM). Similar 2022 event Warwick (https://onlinelibrary.wiley.com/do/10.1111/mmi.0040011), spread over 2 days so that participants could maximise dynamic science downtown location. To represent ethos our community, invited speakers were Pascale Cossart (from Institut Pasteur Paris, France) Felix Randow MRC LMB Cambridge, UK). We also had a strong cohort from across Europe who presented their work (Figure 1). Following coffee welcoming remarks Serge Mostowy (LSHTM), opened keynote talk by entitled ‘How give birth star’, showcasing rise Listeria paradigm (Cossart, 2023) her decorated which recently celebrated two joined Molecular Special Issues (Buchrieser, 2020; Pizarro-Cerda, 2020). talked about career-spanning body work, including ActA actin-based motility, generation first humanised mouse model study invasion, uncovering numerous mechanisms underlying bacterial virulence. All inspired hear enthusiasm science, moving forward. Although field blooming more than ever, she advised future generations need think context evolution environment—in other words, it happening. session chaired (LSHTM) Dan Humphreys (Sheffield). Giulia Manigrasso Andrew Carter's lab, LMB) Orientia tsutsugamushi (in collaboration Jeanne Salje's CIMR) how obligate intracellular pathogen hijacks dynein motility transport autophagy evasion. next Samkeliso Lisa Blundell David Holden's Imperial College London), describing Salmonella effector SteD co-activator E3 ubiquitin ligase WWP2. last Miguel Hernandez-Gonzalez Michael Way's Francis Crick), imaging poxvirus assembly exit infected cells using state-of-the-art microscopy techniques, cryo-electron tomography (Hernandez-Gonzalez et al., 2023). Phil Elks (Sheffield) began Margarida Gomes Mostowy's LSHTM), zebrafish models decipher trained innate immunity guide vaccine studies against shigellosis (Gomes Next Thomas Burgess Elks' Sheffield) models, aiming boost immune response fungal Candida albicans via modulation hypoxia-inducible factor (HIF). Guy Pearson Jeremy Carlton's Crick Kings highlighting wide variety advanced technologies he described envelope SARS-CoV-2 (the causative agent COVID) trafficking pathway deacidify lysosomes. This followed flash talks selected submitted abstracts researchers. Gizem Ozbaykal-Guler LSHTM) interdisciplinary testing role septin hetero-oligomer composition cage entrapment Shigella. Keith Egger Charlotte Odendall's London) discussed Type III Secretion System (T3SS) SPI-2 effectors inhibition interferon signalling. Ines Diaz del Olmo Teresa Thurston's promote non-canonical reprogramming transcriptional pathways; Shan Yin James Mason's symbioses between vaginosis-associated bacteria lactobacilli. Daniel Stark Jason King's reported endosymbionts host-Mucorales interactions. Stevens Robertin his Staphylococcus aureus interactions Gram-positive pathogens. Finally, Richard Allen Meera Unnikrishnan's Warwick) S. interacts macrophages VII (T7SS). late evening ended drinks, poster electric discussion. following morning Odendall (Kings London). second speaker, Randow, delivered thought-provoking defend cytosol invasive bacteria, revealing unexpected roles RNF213 cell-autonomous (Otten 2021). Magdalena Szczesna cytosolic inhibit RNF213-mediated (Szczesna Next, Miriam Kutsch, new group leader Heinrich Heine University (Germany), guanylate binding proteins (GBPs) activate inflammasome. showcased local excellence. Lucy Thorne Greg Towers' lab convergent variants concern enhance suppression (Thorne 2022). Ann-Kathrin Reuschl Clare Jolly's enhanced evasion Omicron subvariants (Mesner In set talks, Ramon Garcia Maset Jennifer Rohn's urinary microenvironment biofilm effect antibiotic uropathogens. Janis Romanopulos into translation pleurocidin-derived antimicrobial peptide therapeutics. Ioanna Panagi molecular dissection kinase effectors. Yizhou Huang analysing antibacterial during Burkholderia. Nagisa Yoshida Naomi McGovern's Cambridge) revealed tools microbicidal capacity human placental gestation. Zoe Speirs efforts modulate therapeutic strategy tuberculosis. presentations networking, lunch coffee. final Rohn (University Enrica Pellegrino Max Gutierrez's Crick) innovative peroxisomes M. tuberculosis (Pellegrino Kathryn Wright Stefan Oehlers' Centenary Institute Australia) discovered, infection, mycobacterial infection-induced miR-126 protects host suppressing permissive (Wright J.J. Awodipe transcriptomic responses osteoblasts infection. speaker afternoon Foulkes Stephen Kaye's Liverpool) exotoxin inhibitors therapeutics, drug pipeline vitro vivo analysis. closed robust discussion prize giving, snacks. won best oral presentation Orientia, Salmonella. Find out respective interviews published alongside report (Ines, 2023; Manigrasso, are very thankful flagship sponsor Company Biologists talented been since edition 2). grateful LSHTM helping coordinate event. Mostowy: Conceptualization; writing – original draft; review editing. Odendall: Humphreys: Philip Elks: L. Rohn: authors declare no conflict interest. No or animal subjects materials used commentary. Data sharing not applicable article data created analyzed study.

Язык: Английский

The causes and consequences of trained immunity in myeloid cells DOI Creative Commons
Gunapati Bhargavi, Selvakumar Subbian

Frontiers in Immunology, Год журнала: 2024, Номер 15

Опубликована: Апрель 11, 2024

Conventionally, immunity in humans has been classified as innate and adaptive, with the concept that only latter type an immunological memory/recall response against specific antigens or pathogens. Recently, a new of trained (a.k.a. memory response) emerged. According to this concept, immune cells can exhibit enhanced responsiveness subsequent challenges, after initial stimulation antigen/pathogen. Thus, enables respond robustly non-specifically through exposure re-exposure antigens/infections vaccines, providing resistance unrelated pathogens reduced infection severity. For example, individuals vaccinated BCG protect tuberculosis were also protected from malaria SARS-CoV-2 infections. Epigenetic modifications such histone acetylation metabolic reprogramming (e.g. shift towards glycolysis) their inter-linked regulations are key factors underpinning activation cells. The integrated epigenetic rewiring generates sufficient intermediates, which is crucial meet energy demand required produce proinflammatory antimicrobial responses by These determine efficacy durability immunity. Importantly, signaling pathways regulatory molecules be harnessed potential targets for developing novel intervention strategies, better vaccines immunotherapies infectious (e.g., sepsis) non-infectious cancer) diseases. However, aberrant inflammation caused inappropriate onset lead severe autoimmune pathological consequences, systemic sclerosis granulomatosis). In review, we provide overview conventional adaptive summarize various mechanistic associated regulation immunity, focusing on immunologic, metabolic, changes myeloid This review underscores transformative immunology, paving way therapeutic strategies diseases leverage memory.

Язык: Английский

Процитировано

10

Metabolic Regulation in the Induction of Trained Immunity DOI Creative Commons
Anaísa V. Ferreira, Jorge Domínguez‐Andrés, Laura M. Merlo Pich

и другие.

Seminars in Immunopathology, Год журнала: 2024, Номер 46(3-4)

Опубликована: Июль 25, 2024

Abstract The innate immune system exhibits features of memory, termed trained immunity, which promote faster and more robust responsiveness to heterologous challenges. Innate memory is sustained through epigenetic modifications, affecting gene accessibility, promoting a tailored transcription for an enhanced response. Alterations in the landscape are intertwined with metabolic rewiring. Here, we review pathways that underscore induction maintenance including glycolysis, oxidative phosphorylation, tricarboxylic acid cycle, amino lipid metabolism. intricate interplay these pivotal establishing distinct cellular compartments. We explore particular case resident lung alveolar macrophages. propose leveraging may present therapeutic potential. Specifically, targeting programs cells emerging strategy clinical interventions, either boost responses immunosuppressed conditions or mitigate maladaptive activation hyperinflammatory diseases.

Язык: Английский

Процитировано

10

Recent advances in modelling Shigella infection DOI Creative Commons
Sydney L. Miles, Kathryn E. Holt, Serge Mostowy

и другие.

Trends in Microbiology, Год журнала: 2024, Номер 32(9), С. 917 - 924

Опубликована: Фев. 28, 2024

Shigella is an important human-adapted pathogen which contributes to a large global burden of diarrhoeal disease. Together with the increasing threat antimicrobial resistance and lack effective vaccine, there great urgency identify novel therapeutics preventatives combat infection. In this review, we discuss development innovative technologies animal models study mechanisms underlying infection humans. We examine recent literature introducing (i) organ-on-chip model, its substantial contribution towards understanding biomechanics infection, (ii) zebrafish has delivered transformative insights into epidemiological success clinical isolates innate immune response Shigella, (iii) pioneering oral mouse model shigellosis, helped discover new inflammasome biology protective against (iv) controlled human been in translating basic research health impact assessing suitability vaccine candidates. consider contributions each where future modelling lies.

Язык: Английский

Процитировано

6

Tissue-resident trained immunity in hepatocytes protects against septic liver injury in zebrafish DOI Creative Commons
Zhuang Wang, Yuanyuan Liu, Jing Hu

и другие.

Cell Reports, Год журнала: 2024, Номер 43(6), С. 114324 - 114324

Опубликована: Июнь 1, 2024

Язык: Английский

Процитировано

4

Improving the odds of survival: transgenerational effects of infections DOI Creative Commons
Victoria M. Spanou, Theano Andriopoulou, Evangelos J. Giamarellos‐Bourboulis

и другие.

EMBO Molecular Medicine, Год журнала: 2025, Номер unknown

Опубликована: Янв. 22, 2025

Abstract Recent studies argue for a novel concept of the role chromatin as carrier epigenetic memory through cellular and organismal generations, defining coordinating gene activity states physiological functions. Environmental insults, such exposures to unhealthy diets, smoking, toxic compounds, infections, can epigenetically reprogram germ-line cells influence offspring phenotypes. This review focuses on intergenerational transgenerational inheritance in different plants, animal species humans, presenting up-to-date evidence arguments effects light Darwinian Lamarckian evolutionary theories. An overview changes induced by infection or other immune challenges is presented, how these changes, known epimutations, contribute shaping The mechanisms that mediate transmission alterations via germline are also discussed. Understanding relationship between environmental fluctuations, resistance, susceptibility diseases critical unraveling disease etiology adaptive evolution.

Язык: Английский

Процитировано

0

Rapid Natural Killer Cell Gene Responses, Generated by TLR Ligand-Induced Trained Immunity, Provide Protection to Bacterial Infection in rag1−/− Mutant Zebrafish (Danio rerio) DOI Open Access
Preeti J. Muire, Larry A. Hanson, Lora Petrie‐Hanson

и другие.

International Journal of Molecular Sciences, Год журнала: 2025, Номер 26(3), С. 962 - 962

Опубликована: Янв. 23, 2025

T and B cell-deficient rag1−/− mutant zebrafish develop protective immunity mediated by trained immunity. In mammals, immune responses can be induced Toll-like receptor (TLR) ligands. This study evaluated in through exposure to TLR ligands (beta glucan, R848, poly I:C), RE33® (a live-attenuated Edwardsiella ictaluri vaccine), or combinations thereof, followed wild-type E. challenge one month later. Survival analyses revealed that all vaccine treatments provided significantly higher protection than the control, with beta glucan inducing greater RE33®, while R848 I:C were equivalent vaccine. Survivals for 70%, + 60%, 54%, 50%, 49%, 32%, 24%, control 0%. Gene expression analysis of kidney liver tissues post training elicited early strong increased expressions nklb (5536 fold @ 6 hpi), nkld (147 12 ifng (575 hpi) kidney, (1369 nkla (250 (734 nklc (2135 (589 liver. Principal component (PCA) gene at 6–12 h secondary infection (nkla hpi, t-bet 6, 48 nitr9 @24 (nkla, nklb, nklc, nkld, ifng, associated highest survival. highlights ligand-induced boosts innate survival, NK cell subpopulations responding differently mediate responses.

Язык: Английский

Процитировано

0

Shigella-trained pro-inflammatory macrophages protect zebrafish from secondary infection DOI
Margarida C. Gomes, Dominik Brokatzky, Serge Mostowy

и другие.

Cell Reports, Год журнала: 2025, Номер 44(5), С. 115601 - 115601

Опубликована: Апрель 22, 2025

Язык: Английский

Процитировано

0

The zebrafish as a potential model for vaccine and adjuvant development DOI Creative Commons
Peter J. Hotez, María Elena Bottazzi, Nelufa Islam

и другие.

Expert Review of Vaccines, Год журнала: 2024, Номер 23(1), С. 535 - 545

Опубликована: Апрель 26, 2024

Zebrafishes represent a proven model for human diseases and systems biology, exhibiting physiological genetic similarities having innate adaptive immune systems. However, they are underexplored vaccinology, vaccine development, testing. Here we summarize gaps challenges.

Язык: Английский

Процитировано

3

Use of zebrafish to identify host responses specific to type VI secretion system mediated interbacterial antagonism DOI Creative Commons
Mollie Virgo, Serge Mostowy, Brian T. Ho

и другие.

PLoS Pathogens, Год журнала: 2024, Номер 20(7), С. e1012384 - e1012384

Опубликована: Июль 18, 2024

Interbacterial competition is known to shape the microbial communities found in host, however interplay between this and host defense are less clear. Here, we use zebrafish hindbrain ventricle (HBV) as an vivo platform investigate responses defined bacterial with distinct forms of interbacterial competition. We that antibacterial activity type VI secretion system (T6SS) from both Vibrio cholerae Acinetobacter baylyi can induce inflammation sensitize infection independent any individual effector. Chemical suppression could resolve T6SS-dependent differences survival, but mechanism by which occurred differed two species. By contrast, colicin-mediated antagonism elicited avirulent strain Shigella sonnei induced a negligible response despite being more potent killer, resulting no impact on A . or V virulence. Altogether, these results provide insight into how different modes affect ways.

Язык: Английский

Процитировано

3

Redox processes are major regulators of leukotriene synthesis in neutrophils exposed to bacteria Salmonella typhimurium; the way to manipulate neutrophil swarming DOI Creative Commons
Ekaterina A. Golenkina, Galina M. Viryasova, Svetlana I. Galkina

и другие.

Frontiers in Immunology, Год журнала: 2024, Номер 15

Опубликована: Фев. 7, 2024

Neutrophils play a primary role in protecting our body from pathogens. When confronted with invading bacteria, neutrophils begin to produce leukotriene B4, potent chemoattractant that, cooperation the bacterial fMLP, stimulates formation of swarms surrounding Here we describe complex redox regulation that either or inhibits fMLP-induced synthesis an experimental model interacting Salmonella typhimurium . The scavenging mitochondrial reactive oxygen species by mitochondria-targeted antioxidants MitoQ and SkQ1, as well inhibition their production inhibitors, inhibit leukotrienes regardless cessation oxidative phosphorylation. On contrary, N-acetylcysteine sodium hydrosulfide promoting reductive shift reversible thiol-disulfide system stimulate leukotrienes. Diamide oxidizes glutathione at high concentrations synthesis, precursor S-adenosyl-L-methionine prevents this inhibition. Diamide-dependent is also prevented diphenyleneiodonium, presumably through NADPH oxidase accumulation. Thus, during infection, maintaining reduced state plays decisive B4. Suppression excess effective strategy for treating various inflammatory pathologies. Our data suggest use may be promising purpose, whereas known thiol-based antioxidants, such N-acetylcysteine, dangerously severe pathogenic infection.

Язык: Английский

Процитировано

2