Evidence map›Paper›PMID 35144530›Full record

ArticleClinical proteomics2022

Quantitative proteomic analysis of serum-purified exosomes identifies putative pre-eclampsia-associated biomarkers.

Rosana Navajas, Antonio Ramos-Fernandez, Ignacio Herraiz, Alberto Galindo, José Luis Bartha, Fernando Corrales, Alberto Paradela

Open access · goldAbstract read
In one paragraph

Article in Clinical proteomics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.3field-weighted citation impact, top 11% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed, 26 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 1 country.

Rosana NavajasFunctional Proteomics Facility, Centro Nacional de Biotecnología (CNB-CSIC), ProteoRed-ISCIII, Madrid, Spain.
Antonio Ramos-FernandezProteobotics, Madrid, Spain.
Ignacio HerraizFetal Medicine Unit, Maternal and Child Health and Development Network (SAMID), Department of Obstetrics and Gynecology, Hospital Universitario 12 de Octubre, Instituto de Investigación Hospital 12 de Octubre, Madrid, Spain.
Alberto GalindoFetal Medicine Unit, Maternal and Child Health and Development Network (SAMID), Department of Obstetrics and Gynecology, Hospital Universitario 12 de Octubre, Instituto de Investigación Hospital 12 de Octubre, Madrid, Spain.
José Luis BarthaDivision of Obstetrics and Maternal Fetal Medicine, La Paz University Hospital, Madrid, Spain.
Fernando CorralesFunctional Proteomics Facility, Centro Nacional de Biotecnología (CNB-CSIC), ProteoRed-ISCIII, Madrid, Spain.
Alberto ParadelaFunctional Proteomics Facility, Centro Nacional de Biotecnología (CNB-CSIC), ProteoRed-ISCIII, Madrid, Spain. alberto.paradela@cnb.csic.es.ORCID http://orcid.org/0000-0001-6837-7056
Centro Nacional de Biotecnología · ESResearch Institute Hospital 12 de Octubre · ESHospital Universitario La Paz · ES

Funding

instituto de salud carlos iii PT17/0019/0001ministerio de ciencia, innovación y universidades SEV2017-0712
6 · The paper itself

Abstract

backgroundThe high incidence of pre-eclampsia, which affects 2-7% of all pregnancies, remains a major health concern. Detection of pre-eclampsia before the appearance of clinical symptoms is essential to allow early intervention, and would benefit from identification of plasma/serum biomarkers to help guide diagnosis and treatment. Liquid biopsy has emerged as a promising source of protein biomarkers that circumvents some of the inherent challenges of proteome-wide analysis of plasma/serum. In this respect, purified exosomes have the added benefit of being carriers of intercellular communication both in physiological and pathological conditions.

methodsWe compared the protein complement of purified exosomes from three different collections of control and pre-eclamptic serum samples, obtained at the end of the second trimester of pregnancy and at delivery. We employed shotgun label-free proteomics to investigate differential protein expression, which was then validated by targeted proteomics.

resultsWe developed a purification method that yielded highly enriched exosome preparations. The presence of specific pregnancy protein markers suggested that a significant proportion of purified exosomes derived from tissues related to pregnancy. Quantitative proteomic analyses allowed us to identify 10, 114 and 98 differentially-regulated proteins in the three sample collections, with a high degree of concordance. Functional analysis suggested that these proteins participate in biological processes related to pre-eclampsia, including angiogenesis, inflammation and cell migration. The differential abundance of 66 proteins was validated by targeted proteomics. Finally, we studied the impact of the pre-eclampsia-associated exosomes in the proteome using an in vitro cellular model.

conclusionsWe have identified and validated differential exosomal proteins in liquid biopsy of pregnant women that open new possibilities for early detection of pre-eclampsia. Additionally, the functional impact of the proteome composition of purified pre-eclamptic exosomes in target cells provides new information to better understand changes in embryo-maternal interactions and, consequently, the pathogenesis of this disease.

Indexed as

BiomarkersCohort studiesExosomeMass spectrometryPlasmaPre-eclampsiaPregnancyProteomicsSerum

Identifiers

PMID35144530
PMCPMC8903615
OpenAlexW4210984669

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.