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Prostasomes are heterogeneous regarding size and appearance but affiliated to one DNA-containing exosome family
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Biochemial structure and function. (Klinisk kemi)
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Biochemial structure and function. (Klinisk kemi)
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Obstetrics and Gynaecology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Biochemial structure and function. (Klinisk kemi)
2012 (English)In: The Prostate, ISSN 0270-4137, E-ISSN 1097-0045, Vol. 72, no 16, 1736-1745 p.Article in journal (Refereed) Published
Abstract [en]

BACKGROUND:

Prostate acinar epithelial cells release microvesicles (prostasomes) that possess pleiotropic biological effects relevant for successful fertilization. Prostasomes are formed in a similar way as exosomes but are heterogeneous as regards size and appearance. Like exosomes they are thought to be mediators of intercellular communication.

METHODS:

We prepared seminal prostasomes in accordance with the prevailing protocol for exosome preparation including passage through a 0.2 µm filter and centrifugation in a sucrose gradient.

RESULTS:

We compared the "filterable prostasomes" with those trapped on the filter ("nonfilterable prostasomes") and, qualitatively, no conspicuous differences were apparent regarding ultrastructure and SDS-PAGE banding pattern. Moreover, both types of prostasomes contained DNA fragments and Western blot revealed presence of prostate specific membrane antigen (PSMA), CD38, and annexin A1.

CONCLUSIONS:

Reasonably, prostasomes could be included in the exosome family and be regarded as one entity containing chromosomal DNA.

Place, publisher, year, edition, pages
2012. Vol. 72, no 16, 1736-1745 p.
National Category
Urology and Nephrology
Identifiers
URN: urn:nbn:se:uu:diva-182338DOI: 10.1002/pros.22526ISI: 000310487200005PubMedID: 22539202OAI: oai:DiVA.org:uu-182338DiVA: diva2:559471
Available from: 2012-10-09 Created: 2012-10-09 Last updated: 2017-12-07Bibliographically approved

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Ronquist, Göran KLarsson, AndersStavreus-Evers, Anneli

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