PXD028783

PXD028783 is an original dataset announced via ProteomeXchange.

Title	The Bartonella autotransporter CFA is a protective antigen and hypervariable target of neutralizing antibodies blocking erythrocyte infection
Description	Antibodies are key to the clearance of Bartonella bacteremia, but the mechanisms and targets of protective antibodies are unknown and bacterial evasion strategies remain elusive. We studied experimental Bartonella taylorii infection of mice, its natural host, and investigated protective immune responses. Clearance of bacteremia depended on specific antibodies that interfere with bacterial attachment to erythrocytes. Accordingly, antibodies were effective in the absence of complement and Fc-receptors. Moreover, they formed independently of B-cell hypermutation and isotype class switch. The cloning of neutralizing monoclonal antibodies (mAbs) led to the identification of the bacterial autotransporter CFA as a protective antibody target, and vaccination against CFA protected against Bartonella bacteremia. MAb binding mapped to a region of CFA that is hypervariable in both human- and mouse-pathogenic Bartonella strains, suggesting mutational antibody evasion. These insights further our understanding of Bartonella immunity and immune evasion and elucidate mechanisms driving high Bartonella prevalence in the wild.
HostingRepository	PRIDE
AnnounceDate	2022-08-12
AnnouncementXML	Submission_2022-08-11_23:50:16.430.xml
DigitalObjectIdentifier	https://dx.doi.org/10.6019/PXD028783
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Supported dataset by repository
PrimarySubmitter	Alexander Schmidt
SpeciesList	scientific name: Bartonella henselae; NCBI TaxID: 38323;
ModificationList	No PTMs are included in the dataset
Instrument	LTQ Orbitrap Elite

Revision	Datetime	Status	ChangeLog Entry
0	2021-09-27 03:51:57	ID requested
⏵ 1	2022-08-11 23:50:17	announced

Siewert LK, Korotaev A, Sedzicki J, Fromm K, Pinschewer DD, Dehio C, autotransporter CFA as a protective antigen and hypervariable target of neutralizing antibodies in mice. Proc Natl Acad Sci U S A, 119(25):e2202059119(2022) [pubmed]

submitter keyword: Bartonella, LC-MS, Infection

Alexander Schmidt
contact affiliation	Biozentrum, University of Basel, Switzerland
contact email	alex.schmidt@unibas.ch
lab head
Alexander Schmidt
contact affiliation	Proteomics Core Facility
contact email	alex.schmidt@unibas.ch
dataset submitter

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PRIDE project URI

• PRIDE
  1. PXD028783
     1. Label: PRIDE project
     2. Name: The Bartonella autotransporter CFA is a protective antigen and hypervariable target of neutralizing antibodies blocking erythrocyte infection