Bovine milk phospholipid fraction protects Neuro2a cells from endoplasmic reticulum stress via PKC activation and autophagy(MEDICAL BIOTECHNOLOGY)
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Endoplasmic reticulum stress commonly causes neuronal damage in a lot of neurodegenerative diseases. In this study, we examined neuroprotective effect of bovine milk phospholipid fraction (mPL) on mouse neuroblastoma Neuro2a cells from endoplasmic reticulum (ER) stress induced cell death. Neuro2a cells were induced cell death by ER stressor tunicamycin (TM) or thapsigargin (TG), and studied whether mPL could attenuate the toxicity. By preincubation with mPL, the cell viabilities were significantly increased in TM or TG treated cells, and caspase-12 activated cells induced by TM or TG treatment were significantly decreased. Protein kinase C inhibitor GF109203x significantly reduced the protective effect on TM induced cell death, and autophagy inhibitor 3-methyladenine reduced the protective effect on TM or TG induced cell death. Moreover, preincubation with mPL significantly stimulated autophagosomes formation observed by dansylcadaverine staining. Our data suggest that mPL will be applicable to prevent neurodegenerative diseases caused by ER stress.
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