Skip Main Navigation Links Jump to Footer
EMBO ReportsVolume 18, Issue 2, 1 February 2017, Pages 303-318

Endoplasmic reticulum chaperone Gp96 controls actomyosin dynamics and protects against pore-forming toxins(Article)(Open Access)

  • aI3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
  • bGroup of Molecular Microbiology, IBMC, Universidade do Porto, Porto, Portugal
  • cInstituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, Porto, Portugal
  • dSection of Microbiology, MRC Centre for Molecular Bacteriology and Infection (CMBI), Imperial College London, London, United Kingdom

Abstract

During infection, plasma membrane (PM) blebs protect host cells against bacterial pore-forming toxins (PFTs), but were also proposed to promote pathogen dissemination. However, the details and impact of blebbing regulation during infection remained unclear. Here, we identify the endoplasmic reticulum chaperone Gp96 as a novel regulator of PFT-induced blebbing. Gp96 interacts with non-muscle myosin heavy chain IIA (NMHCIIA) and controls its activity and remodelling, which is required for appropriate coordination of bleb formation and retraction. This mechanism involves NMHCIIA–Gp96 interaction and their recruitment to PM blebs and strongly resembles retraction of uropod-like structures from polarized migrating cells, a process that also promotes NMHCIIA–Gp96 association. Consistently, Gp96 and NMHCIIA not only protect the PM integrity from listeriolysin O (LLO) during infection by Listeria monocytogenes but also affect cytoskeletal organization and cell migration. Finally, we validate the association between Gp96 and NMHCIIA in vivo and show that Gp96 is required to protect hosts from LLO-dependent killing. © 2016 The Authors

Author keywords

actomyosinendoplasmic reticulum chaperoneListeria monocytogenesplasma membrane blebbingpore-forming toxins

Indexed keywords

EMTREE drug terms:bacterial toxinchaperoneGp96 proteinlisteriolysin Omyosin adenosine triphosphatasemyosin heavy chainnon muscle myosin heavy chain IIApore forming toxinunclassified drugbacterial proteinbacterial toxinchaperoneglucose regulated protein 94membrane proteinmyosin adenosine triphosphatasepore forming cytotoxic protein
EMTREE medical terms:animal cellanimal experimentanimal modelArticlecell migrationcell polaritycontrolled studycytoskeletonendoplasmic reticulumin vivo studyListeria monocytogeneslisteriosismolecular dynamicsnonhumanpriority journalprotein protein interactionprotein structurezebra fishanimalcell survivalhumanmetabolismmouse
MeSH:ActomyosinAnimalsBacterial ProteinsBacterial ToxinsCell SurvivalHumansListeria monocytogenesMembrane GlycoproteinsMiceMolecular ChaperonesPore Forming Cytotoxic ProteinsZebrafish

Chemicals and CAS Registry Numbers:

myosin adenosine triphosphatase;

Actomyosin; Bacterial Proteins; Bacterial Toxins; endoplasmin; Membrane Glycoproteins; Molecular Chaperones; Pore Forming Cytotoxic Proteins

Funding details

Funding sponsor Funding number Acronym
Fundação para a Ciência e a Tecnologia
See opportunities
European Regional Development FundPT2020,COMPETE
SFRH/BD/112217/2015,SFRH/BD/86871/2012
Institut Pasteur
European Society of Clinical Microbiology and Infectious Diseases
See opportunities
Infect-ERA/0001/2013 PROANTILIS
Wellcome Trust
See opportunities
EMBO ALTF 864-2012,WT097411MA,SFRH/BPD/94458/2013
  • 1

    We are grateful to M.T. Almeida and M. Martins who made preliminary observations on the Gp96?NMHCIIA interaction. We are thankful to P. Cossart from Institut Pasteur, Paris, France; O.V. Vieira from CEDOC, Nova Medical School Lisbon, Portugal; and G. Van der Goot from ?cole Polytechnique F?d?rale de Lausanne, Switzerland, for the kind gift of purified LLO, SLO and aerolysin, respectively. We thank C. Leit?o (AFCU), P. Sampaio (ALM) and R. Fernandes (HEMS) from IBMC facilities for technical assistance and J. Bessa and J. Marques for guidance in zebrafish experiments. This work was supported by national funds through FCT?Funda??o para a Ci?ncia e a Tecnologia/MEC?Minist?rio da Educa??o e Ci?ncia and co-funded by Fundo Europeu de Desenvolvimento Regional (FEDER) within the partnership agreement PT2020 related to the research unit number 4293 and through the Operational Competitiveness Programme (COMPETE) under the project ?NORTE-07-0124-FEDER-000002-Host-Pathogen Interactions? co-funded by Programa Operacional Regional do Norte (ON.2?O Novo Norte), under the Quadro de Refer?ncia Estrat?gico Nacional (QREN), through the FEDER and by FCT. It also received support from a Research Grant 2014 by European Society of Clinical Microbiology and Infectious Diseases (ESCMID) (to SS) and from PT2020 research project Infect-ERA/0001/2013 PROANTILIS. Work in the SM Laboratory is supported by a Wellcome Trust Research Career Development Fellowship (WT097411MA) and the Lister Institute of Preventive Medicine. FSM was funded through an EMBO Long-term Post-doctoral Fellowship (EMBO ALTF 864-2012) and a FCT Post-Doctoral Fellowship (SFRH/BPD/94458/2013) through FCT/MEC co-funded by QREN and POPH (Programa Operacional Potencial Humano). CB and JCP received FCT Doctoral Fellowships (SFRH/BD/112217/2015 and SFRH/BD/86871/2012, respectively). SS was supported by FCT Investigator Programme (COMPETE, POPH and FCT).

  • ISSN: 1469221X
  • CODEN: ERMEA
  • Source Type: Journal
  • Original language: English
  • DOI: 10.15252/embr.201642833
  • PubMed ID: 28039206
  • Document Type: Article
  • Publisher: Wiley-VCH Verlag

  Cabanes, D.; I3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal;
© Copyright 2017 Elsevier B.V., All rights reserved.

Cited by 5 documents

Brito, C. , Cabanes, D. , Sarmento Mesquita, F.
Mechanisms protecting host cells against bacterial pore-forming toxins
(2019) Cellular and Molecular Life Sciences
Torraca, V. , Mostowy, S.
Zebrafish Infection: From Pathogenesis to Cell Biology
(2018) Trends in Cell Biology
Yoshida, N. , Frickel, E.-M. , Mostowy, S.
Macrophage-microbe interactions: Lessons from the Zebrafish model
(2017) Frontiers in Immunology
View details of all 5 citations
{"topic":{"name":"Escherichia coli; Meningitis; Coli K1","id":37935,"uri":"Topic/37935","prominencePercentile":72.83658,"prominencePercentileString":"72.837","overallScholarlyOutput":0},"dig":"d4e2b9f636cee5d634578c192c1b5295d8bc8cc74992dbffa1807826f16b2f25"}

SciVal Topic Prominence

Topic:
Prominence percentile: