Human skeletal muscle satellite cells co-express aldehyde dehydrogenase isoforms Aldh1A1 and Aldh1A3

  • Satellite cells (SC) constitute the stem cell population of skeletal muscle and conduct myogenic growth and differentiation. Recently, aldehyde dehydrogenase 1 (ALDH1) has been identified as a novel myogenic factor in experimental models of SCs. ALDH1 constitutes a subfamily of the ALDH enzyme super family. The enzymatic functions of ALDH1 isoforms include both protection against oxidative stress products and regulation of differentiation as pacemaker enzyme in retinoic acid signaling. Although ALDH enzymatic activity has been demonstrated in SCs it is not clear which isoforms are important in human skeletal muscle. Here, we show that ALDH1A1 and ALDH1A3 are expressed in human SCs. Using antibodies directed against ALDH1 and its isoforms ALDH1A1 and ALDH1A3, respectively, we demonstrate immunohistochemical staining in peri-fascicular position matching the localization of SCs. Consistently, co-immunofluorescence reveals ALDH1 expression in CD56 positive stem cells and co-localization ofSatellite cells (SC) constitute the stem cell population of skeletal muscle and conduct myogenic growth and differentiation. Recently, aldehyde dehydrogenase 1 (ALDH1) has been identified as a novel myogenic factor in experimental models of SCs. ALDH1 constitutes a subfamily of the ALDH enzyme super family. The enzymatic functions of ALDH1 isoforms include both protection against oxidative stress products and regulation of differentiation as pacemaker enzyme in retinoic acid signaling. Although ALDH enzymatic activity has been demonstrated in SCs it is not clear which isoforms are important in human skeletal muscle. Here, we show that ALDH1A1 and ALDH1A3 are expressed in human SCs. Using antibodies directed against ALDH1 and its isoforms ALDH1A1 and ALDH1A3, respectively, we demonstrate immunohistochemical staining in peri-fascicular position matching the localization of SCs. Consistently, co-immunofluorescence reveals ALDH1 expression in CD56 positive stem cells and co-localization of the isoforms ALDH1A1 and ALDH1A3 in Pax7 positive SCs. Quantitative analysis of immunohistochemical staining showed no significant differences in the distribution of ALDH1 positive SCs in the skeletal muscle groups pectoralis, diaphragm and psoas that have been investigated in the present study. In conclusion, human SCs co-express the ALDH1 isoforms ALDH1A1 and ALDH1A3.show moreshow less

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Metadaten
Author:Laura RihaniGND, Friederike Liesche-Starnecker, Jürgen Schlegel
URN:urn:nbn:de:bvb:384-opus4-865904
Frontdoor URLhttps://opus.bibliothek.uni-augsburg.de/opus4/86590
URL:https://www.hilarispublisher.com/abstract/human-skeletal-muscle-satellite-cells-coexpress-aldehyde-dehydrogenase-isoforms-aldh1a1-aldh1a3-68936.html
Parent Title (English):Journal of Cytology & Histology
Publisher:Hilaris
Place of publication:Watermael-Boitsfort, Brussels
Type:Article
Language:English
Year of first Publication:2021
Publishing Institution:Universität Augsburg
Release Date:2021/05/07
Volume:12
Issue:4
First Page:568
Institutes:Medizinische Fakultät
Medizinische Fakultät / Lehrstuhl für Anatomie und Zellbiologie
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit
Licence (German):CC-BY 4.0: Creative Commons: Namensnennung (mit Print on Demand)