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Updated: Jul 5, 2026

A Cell Culture Model for Studying the Role of Neuron-Glia Interactions in Ischemia
Published on: November 14, 2020
SEPS1 gene is activated during astrocyte ischemia and shows prominent antiapoptotic effects
Noelia Fradejas1, María Dolores Pastor, Silvia Mora-Lee
1Pharmacology Unit, Facultad de Medicina, Departamento de Ciencias Médicas and Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha, Albacete, Spain.
Abstract:
Contrarily to neurons, astrocytes can survive short periods of ischemia. We have searched for genes implicated in astrocyte resistance to ischemia using oxygen and glucose deprivation (OGD) as a stroke model. A RNA differential display approach uncovered the OGD induction of selenoprotein-S-encoding gene SEPS1. This endoplasmic reticulum (ER) resident protein is known to promote cell survival regulating the ER stress as well as inflammation. We found that suppression of SEPS1 by small interfering RNA severely increases astrocyte injure caused by OGD, suggesting that selenoprotein S protects astrocytes against ischemia. Our data also support that modulation of ER stress is implicated in this effect.
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