PXD005048-1

PXD005048 is an original dataset announced via ProteomeXchange.

Title	Proteomic characterization of exosomes derived from malaria-infected reticulocytes, in a murine malaria model
Description	Reticulocyte-derived exosomes (rex) are 30-100 nm membrane vesicles of endocytic origin released during the maturation of reticulocytes to erythrocytes upon fusion of multivesicular bodies with the plasma membrane. We previously found that immunization of mice with rex from BALB/c mice infected with the reticulocyte-prone non-lethal P. yoelii 17X malaria strain (rexPy) in combination with CpG-ODN promoted survival and long lasting protection of mice subsequently challenged with a lethal strain. Here, we show that rexPy-mediated protection is completely lost in splenectomized animals and such protection is achieved after passive transfer of splenocytes obtained from animals immunized with rexPy+CpG. Notably, rexPy immunization of mice induced non-exhausted memory T cell expansion with effector phenotype. Proteomics analysis of rexPy confirmed their reticulocyte origin and demonstrated the presence of parasite antigens. Our studies thus prove, for what we believe is the first time, that rex from reticulocyte-prone malarial infections are able to induce non-exhausted splenic long-lasting memory responses. In order to translate these results to humans, in vitro experiments with spleen cells of human transplantation donors were performed. Human splenocytes were able to actively capture plasma45 derived exosomes from patients infected with Plasmodium vivax (exPv) and stimulation of spleen cells with exPv for 72h lead to an increase in the number of T cells. All together, these data further support the value of reticulocyte-derived exosomes as a potential novel vaccine and platform against malaria.
HostingRepository	PRIDE
AnnounceDate	2018-10-26
AnnouncementXML	Submission_2018-10-26_13:39:30.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Armando Neto
SpeciesList	scientific name: Mus musculus (Mouse); NCBI TaxID: 10090; scientific name: Plasmodium yoelii; NCBI TaxID: 5861;
ModificationList	monohydroxylated residue; iodoacetamide derivatized residue
Instrument	LTQ Orbitrap Velos

Revision	Datetime	Status	ChangeLog Entry
0	2016-09-28 02:14:22	ID requested
⏵ 1	2018-10-26 13:39:32	announced
2	2024-10-22 04:29:07	announced	2024-10-22: Updated project metadata.

Mart, í, n-Jaular L, de Menezes-Neto A, Mongui, ó, -Tortajada M, Elizalde-Torrent A, D, í, az-Varela M, Fern, á, ndez-Becerra C, Borras FE, Montoya M, Del Portillo HA, Spleen-Dependent Immune Protection Elicited by CpG Adjuvanted Reticulocyte-Derived Exosomes from Malaria Infection Is Associated with Changes in T cell Subsets' Distribution. Front Cell Dev Biol, 4():131(2016) [pubmed]

curator keyword: Biomedical

submitter keyword: exosomes, reticulocytes, malaria, spleen

Hernando Antonio del Portillo
contact affiliation	ICREA at ISGlobal Institute for Glbal Health, Hospital Clinic - Universitat de Barcelona, Barcelona, Spain and IGTP Institut d'Investigació Germans Trias i Pujol, Badalona, Spain
contact email	hernandoa.delportillo@isglobal.org
lab head
Armando Neto
contact affiliation	CPqRR-FIOCRUZ
contact email	armandomenezes@gmail.com
dataset submitter

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PRIDE project URI

• PRIDE
  1. PXD005048
     1. Label: PRIDE project
     2. Name: Proteomic characterization of exosomes derived from malaria-infected reticulocytes, in a murine malaria model