FE-SEM Characterization of α-Mannose Density and Surface Mapping Changes in Human Sperm Head During In Vitro Capacitation
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http://hdl.handle.net/10045/110911
Títol: | FE-SEM Characterization of α-Mannose Density and Surface Mapping Changes in Human Sperm Head During In Vitro Capacitation |
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Autors: | Gómez-Torres, María José | Robles-Gómez, Laura | Huerta-Retamal, Natalia | Sáez Espinosa, Paula | Avilés Sánchez, Manuel | Aizpurua, Jon | Romero, Alejandro |
Grups d'investigació o GITE: | Grupo de Inmunología, Biología Celular y del Desarrollo |
Centre, Departament o Servei: | Universidad de Alicante. Departamento de Biotecnología |
Paraules clau: | Concanavalin A | FE-SEM | Gold labeling | In vitro capacitation | Spermatozoa |
Àrees de coneixement: | Biología Celular |
Data de publicació: | 30-d’octubre-2020 |
Editor: | Cambridge University Press |
Citació bibliogràfica: | Microscopy and Microanalysis. 2020, 26: 1220-1225. https://doi.org/10.1017/S1431927620024630 |
Resum: | Sperm capacitation includes the reorganization of plasma membrane components and the outstanding modification of the glycocalyx. The α-mannose presence and location during in vitro capacitation have been commonly described in human spermatozoa using Concanavalin A (Con A) lectin. However, it is still unclear to date how in vitro capacitation time affects the α-mannose residues and their topographic spatial distribution on sperm membrane. Here, we characterized the α-mannose density and specific membrane domain locations before and after in vitro capacitation (1–4 h) using high-resolution field emission scanning electron microscopy (FE-SEM). Results showed that α-mannose residues were present preferably on the acrosome domains for all physiological conditions. Uncapacitated sperm comparatively exhibits significant highest labeling densities of α-mannose residues. In addition, as in vitro capacitation takes place, significant and progressive decreasing of sugar residues was combined with their relocation mostly affecting acrosomal domain apical areas. Our findings reveal that combined approach using FE-SEM and gold nanoparticle topographical mapping offers new human sperm biomolecular and structural details during capacitation events. |
Patrocinadors: | The current study was funded by the Cátedra Human Fertility and Departamento de Biotecnología of the Universidad de Alicante (VIGROB-186). |
URI: | http://hdl.handle.net/10045/110911 |
ISSN: | 1431-9276 (Print) | 1435-8115 (Online) |
DOI: | 10.1017/S1431927620024630 |
Idioma: | eng |
Tipus: | info:eu-repo/semantics/article |
Drets: | © The Author(s), 2020. Published by Cambridge University Press |
Revisió científica: | si |
Versió de l'editor: | https://doi.org/10.1017/S1431927620024630 |
Apareix a la col·lecció: | INV - Grupo de Inmunología - Artículos de Revistas |
Arxius per aquest ítem:
Arxiu | Descripció | Tamany | Format | |
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Gomez-Torres_etal_2020_MicroscMicroanal_final.pdf | Versión final (acceso restringido) | 403,08 kB | Adobe PDF | Obrir Sol·licitar una còpia |
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