We performed sub-cellular fractionation to obtain mitochondria-enriched fractions. To this aim, 2.107 rat primary cortical neurons were pelleted, rinsed twice in PBS and resuspended in homogenization buffer (HB: 10 mM Tris–HCl, pH7.5, 2 mM MgCl2, 10 mM KCl, 250 mM Sucrose, Protease Inhibitor cocktail, 0.5 mM DTT). Neurons were then frozen at – 80 °C and thawed, transferred to a 2 ml Potter homogenizer, triturated for 20 times and further centrifuged at 1,000 g for 10 min. The supernatant was then centrifuged at 12,000 g for 15 min, afterwards the pellet, containing mitochondria, was resuspended in HB + 1% Triton X-100 for protein quantification by Western Blot.
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