Surface glycans contribute to differences between seminal prostasomes from normozoospermic and oligozoospermic men
| Autor: | Ninoslav Mitić, Maja Kosanović, Miroslava Janković, Bojana Milutinović, Sanja Goč |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Male
Glycan Glycosylation Galectin 3 lcsh:Medicine 030209 endocrinology & metabolism Centrifugation Ligands Extracellular vesicles Article prostasomes Antioxidants 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Microscopy Electron Transmission Polysaccharides Semen Medicine Humans 030219 obstetrics & reproductive medicine biology business.industry lcsh:R fungi Prostate food and beverages General Medicine Oligospermia Chromatography Ion Exchange Spermatozoa N-Acetylneuraminic Acid Sialic acid Membrane chemistry Biochemistry sialic acid biology.protein seminal plasma Chromatography Gel Prostasomes business Reactive Oxygen Species Intracellular Biomarkers Protein Binding |
| Zdroj: | Upsala Journal of Medical Sciences Upsala Journal of Medical Sciences, Vol 124, Iss 2, Pp 111-118 (2019) |
| ISSN: | 2000-1967 0300-9734 |
| Popis: | Background: Extracellular vesicles (EVs), released from the plasma membrane or intracellular compartments, have a specific composition related to their parent cells, but they can, additionally, be modified by the extracellular environment. Although glycans are known to contribute to EV composition and may have biomedical importance as biomarkers and recognition signals, they have not been extensively investigated. In this study, seminal prostasomes, i.e. EVs from seminal plasma (SP) of normo- and oligozoospermic men, were analyzed in order to detect possible changes in their surface glycans under altered physiological conditions. Methods: Prostasomes were isolated from pooled SP by differential centrifugation and gel filtration, followed by glycobiochemical characterization using lectin/immune-transmission microscopy and ion-exchange chromatography. Results: Within the frame of overall similarity in protein composition, surface glycans specifically contributed to the differences between the examined groups of prostasomes in terms of presentation of sialylated and mannosylated moieties. These changes did not affect their anti-oxidative capacity, but implied a possible influence on the accessibility of galectin-3 to its ligands on the prostasomal surface. Conclusions: Subtle differences in the presentation of surface molecules may be helpful for differentiation among vesicles sharing the same physical properties. In addition, this may point to some unexpected regulatory mechanisms of interaction of distinct populations of vesicles with their binding partners. |
| Databáze: | OpenAIRE |
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