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2015 ; 10
(7
): 1120-4
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Necrostatin-1 protection of dopaminergic neurons
#MMPMID26330837
Wu JR
; Wang J
; Zhou SK
; Yang L
; Yin JL
; Cao JP
; Cheng YB
Neural Regen Res
2015[Jul]; 10
(7
): 1120-4
PMID26330837
show ga
Necroptosis is characterized by programmed necrotic cell death and autophagic
activation and might be involved in the death process of dopaminergic neurons in
Parkinson's disease. We hypothesized that necrostatin-1 could block necroptosis
and give protection to dopaminergic neurons. There is likely to be crosstalk
between necroptosis and other cell death pathways, such as apoptosis and
autophagy. PC12 cells were pretreated with necroststin-1 1 hour before exposure
to 6-hydroxydopamine. We examined cell viability, mitochondrial membrane
potential and expression patterns of apoptotic and necroptotic death signaling
proteins. The results showed that the autophagy/lysosomal pathway is involved in
the 6-hydroxydopamine-induced death process of PC12 cells. Mitochondrial
disability induced overactive autophagy, increased cathepsin B expression, and
diminished Bcl-2 expression. Necrostatin-1 within a certain concentration range
(5-30 ?M) elevated the viability of PC12 cells, stabilized mitochondrial membrane
potential, inhibited excessive autophagy, reduced the expression of LC3-II and
cathepsin B, and increased Bcl-2 expression. These findings suggest that
necrostatin-1 exerted a protective effect against injury on dopaminergic neurons.
Necrostatin-1 interacts with the apoptosis signaling pathway during this process.
This pathway could be a new neuroprotective and therapeutic target in Parkinson's
disease.