Evidence map›Paper›PMID 23785420›Full record

ArticlePloS one2013

CD9-positive microvesicles mediate the transfer of molecules to Bovine Spermatozoa during epididymal maturation.

Julieta N Caballero, Gilles Frenette, Clémence Belleannée, Robert Sullivan

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed
3.7field-weighted citation impact, top 6% 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

62 citing papers in PubMed, 154 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Epididymosomes: Composition and Functions for Sperm Maturation.Advances in anatomy, embryology, and cell biology · 2026
    Review
  6. Role of Seminal Exosomes in Reproduction.Journal of cellular physiology · 2025
    Review
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  10. Review
  11. Review
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2 more citing papers are in PubMed but not listed here.

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

4 authors at 2 institutions in 1 country.

Julieta N CaballeroCentre de Recherche du Centre Hospitalier Universitaire de Québec (CRCHU de Québec), Université Laval, Québec, PQ, Canada.
Gilles Frenette
Clémence Belleannée
Robert Sullivan
Centre hospitalier universitaire de Québec · CAUniversité Laval · CA

Funding

Canadian Institutes of Health Research
6 · The paper itself

Abstract

Acquisition of fertilization ability by spermatozoa during epididymal transit occurs in part by the transfer of molecules from membranous vesicles called epididymosomes. Epididymosomes are heterogeneous in terms of both size and molecular composition. Exosomes and other related small membranous vesicles (30-120 nm) containing tetraspanin proteins on their surface are found in many biological fluids. In this study, we demonstrate that these vesicles are present in bovine cauda epididymal fluid as a subpopulation of epididymosomes. They contain tetraspanin CD9 in addition to other proteins involved in sperm maturation such as P25b, GliPr1L1, and MIF. In order to study the mechanism of protein transfer to sperm, DilC12-labeled unfractionated epididymosomes or CD9-positive microvesicles were coincubated with epididymal spermatozoa, and their transfer was evaluated by flow cytometry. CD9-positive microvesicles from epididymal fluid specifically transferred molecules to spermatozoa, whereas those prepared from blood were unable to do so. The CD9-positive microvesicles transferred molecules to the same sperm regions (acrosome and midpiece) as epididymosomes, with the same kinetics; however, the molecules were preferentially transferred to live sperm and, in contrast to epididymosomes, Zn(2+) did not demonstrate potentiated transfer. Tetraspanin CD9 was associated with other proteins on the membrane surface of CD9-positive microvesicles according to coimmunoprecipitation experiments. CD26 cooperated with CD9 in the molecular transfer to sperm since the amount of molecules transferred was significantly reduced in the presence of specific antibodies. In conclusion, CD9-positive microvesicles are present in bovine cauda epididymal fluid and transfer molecules to live maturing sperm in a tissue-specific manner that involves CD9 and CD26.

Indexed as

AnimalsBiological TransportCattleDipeptidyl Peptidase 4EpididymisEpithelial CellsExosomesMaleMembrane MicrodomainsProtein TransportSpermatozoaSperm MaturationTetraspanin 29TetraspaninsTransport VesiclesDipeptidyl Peptidase 4Tetraspanin 29Tetraspanins

Identifiers

PMID23785420
PMCPMC3681974
OpenAlexW1994148077

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.