Spores of Clostridioides difficile are toxin delivery vehicles

Bibliographic Details
Main Author: Cassona, Carolina P.
Publication Date: 2024
Other Authors: Ramalhete, Sara, Amara, Khira, Candela, Thomas, Kansau, Imad, Denève-Larrazet, Cécile, Janoir-Jouveshomme, Claire, Mota, Luís Jaime, Dupuy, Bruno, Serrano, Mónica, Henriques, Adriano O.
Format: Article
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: http://hdl.handle.net/10362/182741
Summary: Funding Information: We thank Simon Cutting for the gift of the anti-CotD antibody and Aimee Shen for the gift of the anti-GerS and anti-GPR antibodies. We thank Georges Haustant for help with the spore cytopathic assays. This work was supported by grant PEst-OE/EQB/LA0004/2011 from the \u201CFunda\u00E7\u00E3o para a Ci\u00EAncia e a Tecnologia\u201D (FCT) to A.O.H. This work was also financially supported by Project LISBOA-01-0145-FEDER-007660 (\u201CMicrobiologia Molecular, Estrutural e Celular\u201D) funded by FEDER funds through COMPETE2020 - \u201CPrograma Operacional Competitividade e Internacionaliza\u00E7\u00E3o\u201D (POCI), by national funds through the FCT (\u201CFunda\u00E7\u00E3o para a Ci\u00EAncia e a Tecnologia\u201D), and by program IF of the FCT (IF/00268/2013/CP1173/CT0006) to M.S. C.C. (PD/BD/52212/2013), S.R. (SFRH/BD/45459/08) and K.A. (PD/BD/148398/2019) were the recipients of doctoral fellowships from the FCT. Publisher Copyright: © The Author(s) 2024.
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spelling Spores of Clostridioides difficile are toxin delivery vehiclesSpores, Bacterial/metabolismClostridioides difficile/geneticsBacterial Toxins/metabolismHumansBacterial Proteins/metabolismGene Expression Regulation, BacterialAnimalsChlorocebus aethiopsVero CellsEnterotoxins/metabolismMedicine (miscellaneous)Biochemistry, Genetics and Molecular Biology(all)Agricultural and Biological Sciences(all)Funding Information: We thank Simon Cutting for the gift of the anti-CotD antibody and Aimee Shen for the gift of the anti-GerS and anti-GPR antibodies. We thank Georges Haustant for help with the spore cytopathic assays. This work was supported by grant PEst-OE/EQB/LA0004/2011 from the \u201CFunda\u00E7\u00E3o para a Ci\u00EAncia e a Tecnologia\u201D (FCT) to A.O.H. This work was also financially supported by Project LISBOA-01-0145-FEDER-007660 (\u201CMicrobiologia Molecular, Estrutural e Celular\u201D) funded by FEDER funds through COMPETE2020 - \u201CPrograma Operacional Competitividade e Internacionaliza\u00E7\u00E3o\u201D (POCI), by national funds through the FCT (\u201CFunda\u00E7\u00E3o para a Ci\u00EAncia e a Tecnologia\u201D), and by program IF of the FCT (IF/00268/2013/CP1173/CT0006) to M.S. C.C. (PD/BD/52212/2013), S.R. (SFRH/BD/45459/08) and K.A. (PD/BD/148398/2019) were the recipients of doctoral fellowships from the FCT. Publisher Copyright: © The Author(s) 2024.Clostridioides difficile causes a wide range of intestinal diseases through the action of two main cytotoxins, TcdA and TcdB. Ingested spores germinate in the intestine establishing a population of cells that produce toxins and spores. The pathogenicity locus, PaLoc, comprises several genes, including those coding for TcdA/B, for the holin-like TcdE protein, and for TcdR, an auto-regulatory RNA polymerase sigma factor essential for tcdA/B and tcdE expression. Here we show that tcdR, tcdA, tcdB and tcdE are expressed in a fraction of the sporulating cells, in either the whole sporangium or in the forespore. The whole sporangium pattern is due to protracted expression initiated in vegetative cells by σD, which primes the TcdR auto-regulatory loop. In contrast, the forespore-specific regulatory proteins σG and SpoVT control TcdR production and tcdA/tcdB and tcdE expression in this cell. We detected TcdA at the spore surface, and we show that wild type and ΔtcdA or ΔtcdB spores but not ΔtcdR or ΔtcdA/ΔtcdB spores are cytopathic against HT29 and Vero cells, indicating that spores may serve as toxin-delivery vehicles. Since the addition of TcdA and TcdB enhance binding of spores to epithelial cells, this effect may occur independently of toxin production by vegetative cells.Instituto de Tecnologia Química e Biológica António Xavier (ITQB)UCIBIO - Applied Molecular Biosciences UnitDCV - Departamento de Ciências da VidaRUNCassona, Carolina P.Ramalhete, SaraAmara, KhiraCandela, ThomasKansau, ImadDenève-Larrazet, CécileJanoir-Jouveshomme, ClaireMota, Luís JaimeDupuy, BrunoSerrano, MónicaHenriques, Adriano O.2025-05-07T21:18:22Z2024-122024-12-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10362/182741eng2399-3642PURE: 95644848https://doi.org/10.1038/s42003-024-06521-xinfo:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-05-19T01:39:20Zoai:run.unl.pt:10362/182741Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-29T07:13:46.460122Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Spores of Clostridioides difficile are toxin delivery vehicles
title Spores of Clostridioides difficile are toxin delivery vehicles
spellingShingle Spores of Clostridioides difficile are toxin delivery vehicles
Cassona, Carolina P.
Spores, Bacterial/metabolism
Clostridioides difficile/genetics
Bacterial Toxins/metabolism
Humans
Bacterial Proteins/metabolism
Gene Expression Regulation, Bacterial
Animals
Chlorocebus aethiops
Vero Cells
Enterotoxins/metabolism
Medicine (miscellaneous)
Biochemistry, Genetics and Molecular Biology(all)
Agricultural and Biological Sciences(all)
title_short Spores of Clostridioides difficile are toxin delivery vehicles
title_full Spores of Clostridioides difficile are toxin delivery vehicles
title_fullStr Spores of Clostridioides difficile are toxin delivery vehicles
title_full_unstemmed Spores of Clostridioides difficile are toxin delivery vehicles
title_sort Spores of Clostridioides difficile are toxin delivery vehicles
author Cassona, Carolina P.
author_facet Cassona, Carolina P.
Ramalhete, Sara
Amara, Khira
Candela, Thomas
Kansau, Imad
Denève-Larrazet, Cécile
Janoir-Jouveshomme, Claire
Mota, Luís Jaime
Dupuy, Bruno
Serrano, Mónica
Henriques, Adriano O.
author_role author
author2 Ramalhete, Sara
Amara, Khira
Candela, Thomas
Kansau, Imad
Denève-Larrazet, Cécile
Janoir-Jouveshomme, Claire
Mota, Luís Jaime
Dupuy, Bruno
Serrano, Mónica
Henriques, Adriano O.
author2_role author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Instituto de Tecnologia Química e Biológica António Xavier (ITQB)
UCIBIO - Applied Molecular Biosciences Unit
DCV - Departamento de Ciências da Vida
RUN
dc.contributor.author.fl_str_mv Cassona, Carolina P.
Ramalhete, Sara
Amara, Khira
Candela, Thomas
Kansau, Imad
Denève-Larrazet, Cécile
Janoir-Jouveshomme, Claire
Mota, Luís Jaime
Dupuy, Bruno
Serrano, Mónica
Henriques, Adriano O.
dc.subject.por.fl_str_mv Spores, Bacterial/metabolism
Clostridioides difficile/genetics
Bacterial Toxins/metabolism
Humans
Bacterial Proteins/metabolism
Gene Expression Regulation, Bacterial
Animals
Chlorocebus aethiops
Vero Cells
Enterotoxins/metabolism
Medicine (miscellaneous)
Biochemistry, Genetics and Molecular Biology(all)
Agricultural and Biological Sciences(all)
topic Spores, Bacterial/metabolism
Clostridioides difficile/genetics
Bacterial Toxins/metabolism
Humans
Bacterial Proteins/metabolism
Gene Expression Regulation, Bacterial
Animals
Chlorocebus aethiops
Vero Cells
Enterotoxins/metabolism
Medicine (miscellaneous)
Biochemistry, Genetics and Molecular Biology(all)
Agricultural and Biological Sciences(all)
description Funding Information: We thank Simon Cutting for the gift of the anti-CotD antibody and Aimee Shen for the gift of the anti-GerS and anti-GPR antibodies. We thank Georges Haustant for help with the spore cytopathic assays. This work was supported by grant PEst-OE/EQB/LA0004/2011 from the \u201CFunda\u00E7\u00E3o para a Ci\u00EAncia e a Tecnologia\u201D (FCT) to A.O.H. This work was also financially supported by Project LISBOA-01-0145-FEDER-007660 (\u201CMicrobiologia Molecular, Estrutural e Celular\u201D) funded by FEDER funds through COMPETE2020 - \u201CPrograma Operacional Competitividade e Internacionaliza\u00E7\u00E3o\u201D (POCI), by national funds through the FCT (\u201CFunda\u00E7\u00E3o para a Ci\u00EAncia e a Tecnologia\u201D), and by program IF of the FCT (IF/00268/2013/CP1173/CT0006) to M.S. C.C. (PD/BD/52212/2013), S.R. (SFRH/BD/45459/08) and K.A. (PD/BD/148398/2019) were the recipients of doctoral fellowships from the FCT. Publisher Copyright: © The Author(s) 2024.
publishDate 2024
dc.date.none.fl_str_mv 2024-12
2024-12-01T00:00:00Z
2025-05-07T21:18:22Z
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dc.language.iso.fl_str_mv eng
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PURE: 95644848
https://doi.org/10.1038/s42003-024-06521-x
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