Sertoli cell adaptation to glucose deprivation: Potential role of AMPK in the regulation of lipid metabolism.

Autor: Rindone GM; Centro de Investigaciones Endocrinológicas 'Dr. César Bergadá' (CEDIE)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Buenos Aires, Argentina., Dasso ME; Centro de Investigaciones Endocrinológicas 'Dr. César Bergadá' (CEDIE)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Buenos Aires, Argentina., Centola CL; Centro de Investigaciones Endocrinológicas 'Dr. César Bergadá' (CEDIE)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Buenos Aires, Argentina., Pellizzari EH; Centro de Investigaciones Endocrinológicas 'Dr. César Bergadá' (CEDIE)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Buenos Aires, Argentina., Camberos MDC; Centro de Investigaciones Endocrinológicas 'Dr. César Bergadá' (CEDIE)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Buenos Aires, Argentina., Toneatto J; Instituto de Biología y Medicina Experimental (IBYME), CONICET, Buenos Aires, Argentina., Galardo MN; Centro de Investigaciones Endocrinológicas 'Dr. César Bergadá' (CEDIE)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Buenos Aires, Argentina., Meroni SB; Centro de Investigaciones Endocrinológicas 'Dr. César Bergadá' (CEDIE)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Buenos Aires, Argentina., Riera MF; Centro de Investigaciones Endocrinológicas 'Dr. César Bergadá' (CEDIE)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Buenos Aires, Argentina.
Jazyk: angličtina
Zdroj: Journal of cellular biochemistry [J Cell Biochem] 2023 May; Vol. 124 (5), pp. 716-730. Date of Electronic Publication: 2023 Mar 22.
DOI: 10.1002/jcb.30399
Abstrakt: Sertoli cells (SCs) provide an adequate environment for germ cell development. SCs possess unique features that meet germ cells' metabolic demands: they produce lactate from glucose, which is delivered as energy substrate to germ cells. SCs store fatty acids (FAs) as triacylglycerols (TAGs) in lipid droplets (LDs) and can oxidize FAs to sustain their own energetic demands. They also produce ketone bodies from FAs. It has been shown that exposure of SCs to metabolic stresses, such as glucose deprivation, triggers specific adaptive responses that sustain cell survival and preserve lactate supply to germ cells. The aim of the present study was to investigate whether there are modifications in rat SCs lipid metabolism, including LD content, FA oxidation, and ketone bodies production, as part of their adaptive response to glucose deprivation. The present study was performed in 20-day-old rat SCs cultures. We determined LD content by Oil Red O staining, FA oxidation by measuring the release of 3 H 2 O from [ 3 H] palmitate, TAGs and 3-hydroxybutyrate levels by spectrophotometric methods, and mRNA levels by RT-qPCR. Results show that the absence of glucose in SC culture medium entails: (1) a decrease in LD content and TAGs levels that is accompanied by decreased perilipin 1 mRNA levels, (2) an increase in FA oxidation that is in part mediated by AMP kinase (AMPK) activation and (3) a decrease in 3-hydroxybutyrate production. Additionally, we studied whether sestrins (SESN1, 2 and 3), proteins involved in the cellular response to stress, are regulated in glucose deprivation conditions. We show that there is an increase in SESN2 mRNA levels in deprived conditions. In conclusion, glucose deprivation affects SC lipid metabolism promoting FA mobilization from LDs to be used as energy source.
(© 2023 Wiley Periodicals LLC.)
Databáze: MEDLINE
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