PXD055073-1

PXD055073 is an original dataset announced via ProteomeXchange.

Title	Characteristics of two Saccharomyces cerevisiae strains and their extracellular vesicles as new candidates for probiotics.
Description	There is a huge disparity between the number of bacterial and yeast probiotics in favor of the former. The latest reports indicate that extracellular vehicles (EVs) play a significant role in probiotic mechanisms. In the present work, we compared the probiotic properties of Saccharomyces cerevisiae strains (WUT3 and WUT151), which have never been previously characterized in this context, with commercial probiotic yeast - Saccharomyces boulardii CNCM-745. Notably, WUT3 and WUT151 reacted more mildly to the unfavorable simulated environment of saliva, stomach, small and large intestines. As a result, we confirmed that WUT3 and WUT151 were superior to S. boulardii in terms of probiotic properties. Then, we performed a complex analysis of their EVs, isolated by a multistep filtration process. The nanoparticle tracing analysis showed no significant difference in the physical structure of the vesicles between the strains. MTT studies confirmed that EVs are not toxic against normal human colorectal cell lines CCD-18 Co and CCD 841 CoN. However, toxicity was observed against the HT-29 cancer line. By staining EVs with Nile Red, we successfully visualized EVs – cell interactions. Finally, we explored the profile of proteins transported with the EVs, identifying a significant overrepresentation of extracellular proteins. Furthermore, based on comparisons with other proteomic data, we selected marker proteins for S. cerevisiae EVs. This knowledge will be helpful for further studies on tracking the transfer of the protein cargo of yeast EVs to human cells using, for instance, specific antibodies to these marker proteins.
HostingRepository	PRIDE
AnnounceDate	2025-05-22
AnnouncementXML	Submission_2025-05-22_13:44:04.845.xml
DigitalObjectIdentifier	https://dx.doi.org/10.6019/PXD055073
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Supported dataset by repository
PrimarySubmitter	Ewa Sitkiewicz
SpeciesList	scientific name: Saccharomyces cerevisiae (Baker's yeast); NCBI TaxID: 4932;
ModificationList	methylthiolated residue; monohydroxylated residue
Instrument	Q Exactive

Revision	Datetime	Status	ChangeLog Entry
0	2024-08-22 07:25:55	ID requested
⏵ 1	2025-05-22 13:44:05	announced

10.6019/PXD055073;

submitter keyword: probiotic, extracellular vesicles, S. cerevisiae, EVs

Jolanta Mierzejewska
contact affiliation	Faculty of Chemistry, Chair of Drug and Cosmetics Biotechnology, Warsaw University of Technology, Warsaw, Poland
contact email	jolanta.mierzejewska@pw.edu.pl
lab head
Ewa Sitkiewicz
contact affiliation	Mass Spectrometry Laboratory Institute of Biochemistry and Biophysics Polish Academy of Sciences
contact email	ewa@ibb.waw.pl
dataset submitter

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PRIDE project URI

• PRIDE
  1. PXD055073
     1. Label: PRIDE project
     2. Name: Characteristics of two Saccharomyces cerevisiae strains and their extracellular vesicles as new candidates for probiotics.