The roles of Centrin 2 and Dynein Light Chain 8a in apical secretory organelles discharge of Toxoplasma gondii
| dc.rights.license | open | en_US |
| dc.contributor.author | LENTINI, Gaëlle | |
| dc.contributor.author | DUBOIS, David | |
| dc.contributor.author | MACO, Bohumil | |
| dc.contributor.author | SOLDATI-FAVRE, Dominique | |
| hal.structure.identifier | Microbiologie Fondamentale et Pathogénicité [MFP] | |
| dc.contributor.author | FRÉNAL, Karine | |
| dc.date.accessioned | 2023-06-14T10:28:48Z | |
| dc.date.available | 2023-06-14T10:28:48Z | |
| dc.date.issued | 2019 | |
| dc.identifier.issn | 1398-9219 | en_US |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/182681 | |
| dc.description.abstractEn | To efficiently enter host cells, apicomplexan parasites such as Toxoplasma gondii rely on an apical complex composed of tubulin-based structures as well as two sets of secretory organelles named micronemes and rhoptries. The trafficking and docking of these organelles to the apical pole of the parasite is crucial for the discharge of their contents. Here, we describe two proteins typically associated with microtubules, Centrin 2 (CEN2) and Dynein Light Chain 8a (DLC8a), that are required for efficient host cell invasion. CEN2 localizes to four different compartments, and remarkably, conditional depletion of the protein occurs in stepwise manner, sequentially depleting the protein pools from each location. This phenomenon allowed us to discern the essential function of the apical pool of CEN2 for microneme secretion, motility, invasion and egress. DLC8a localizes to the conoid, and its depletion also perturbs microneme exocytosis in addition to the apical docking of the rhoptry organelles, causing a severe defect in host cell invasion. Phenotypic characterization of CEN2 and DLC8a indicates that while both proteins participate in microneme secretion, they likely act at different steps along the cascade of events leading to organelle exocytosis. | |
| dc.language.iso | EN | en_US |
| dc.subject.en | Toxoplasma gondii | |
| dc.subject.en | annuli | |
| dc.subject.en | apicomplexa | |
| dc.subject.en | centrin | |
| dc.subject.en | conoid | |
| dc.subject.en | dynein light chain | |
| dc.subject.en | egress | |
| dc.subject.en | exocytosis | |
| dc.subject.en | invasion | |
| dc.subject.en | microneme | |
| dc.subject.en | motility | |
| dc.subject.en | rhoptries | |
| dc.subject.mesh | Dyneins | |
| dc.subject.mesh | Exocytosis | |
| dc.subject.mesh | Protein Transport | |
| dc.subject.mesh | Protozoan Proteins | |
| dc.subject.mesh | Secretory Vesicles | |
| dc.subject.mesh | Toxoplasma | |
| dc.subject.mesh | Trimethoprim, Sulfamethoxazole Drug Combination | |
| dc.title.en | The roles of Centrin 2 and Dynein Light Chain 8a in apical secretory organelles discharge of Toxoplasma gondii | |
| dc.type | Article de revue | en_US |
| dc.identifier.doi | 10.1111/tra.12673 | en_US |
| dc.subject.hal | Sciences du Vivant [q-bio]/Microbiologie et Parasitologie/Parasitologie | en_US |
| bordeaux.journal | Traffic | en_US |
| bordeaux.page | 583-600 | en_US |
| bordeaux.volume | 20 | en_US |
| bordeaux.hal.laboratories | MFP (Laboratoire Microbiologie Fondamentale et Pathogénicité) - UMR 5234 | en_US |
| bordeaux.issue | 8 | en_US |
| bordeaux.institution | CNRS | en_US |
| bordeaux.peerReviewed | oui | en_US |
| bordeaux.inpress | non | en_US |
| bordeaux.import.source | hal | |
| hal.identifier | hal-03788910 | |
| hal.version | 1 | |
| hal.export | false | |
| workflow.import.source | hal | |
| dc.rights.cc | Pas de Licence CC | en_US |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Traffic&rft.date=2019&rft.volume=20&rft.issue=8&rft.spage=583-600&rft.epage=583-600&rft.eissn=1398-9219&rft.issn=1398-9219&rft.au=LENTINI,%20Ga%C3%ABlle&DUBOIS,%20David&MACO,%20Bohumil&SOLDATI-FAVRE,%20Dominique&FR%C3%89NAL,%20Karine&rft.genre=article |
