Protective Effects of Chinese Propolis and Its Component, Chrysin, against Neuronal Cell Death via Inhibition of Mitochondrial Apoptosis Pathway in SH-SY5Y Cells

2008 ◽  
Vol 56 (19) ◽  
pp. 8944-8953 ◽  
Author(s):  
Hiroshi Izuta ◽  
Masamitsu Shimazawa ◽  
Shigemi Tazawa ◽  
Yoko Araki ◽  
Satoshi Mishima ◽  
...  
2010 ◽  
Vol 30 (23) ◽  
pp. 5484-5501 ◽  
Author(s):  
Liam P. Tuffy ◽  
Caoimhín G. Concannon ◽  
Beatrice D'Orsi ◽  
Matthew A. King ◽  
Ina Woods ◽  
...  

ABSTRACT Proteasomal stress and the accumulation of polyubiquitinated proteins are key features of numerous neurodegenerative disorders. Previously we demonstrated that stabilization of p53 and activation of its target gene, puma (p53-upregulated mediator of apoptosis), mediated proteasome inhibitor-induced apoptosis in cancer cells. Here we demonstrated that Puma also contributed to proteasome inhibitor-induced apoptosis in mouse neocortical neurons. Although protection afforded by puma gene deletion was incomplete, we found little evidence indicating contributions from other proapoptotic BH3-only proteins. Attenuation of bax expression did not further reduce Puma-independent apoptosis, suggesting that pathways other than the mitochondrial apoptosis pathway were activated. Real-time imaging experiments in wild-type and puma-deficient neurons using a fluorescence resonance energy transfer (FRET)-based caspase sensor confirmed the involvement of a second cell death pathway characterized by caspase activation prior to mitochondrial permeabilization and, more prominently, a third, caspase-independent and Puma-independent pathway characterized by rapid cell shrinkage and nuclear condensation. This pathway involved lysosomal permeabilization in the absence of autophagy activation and was sensitive to cathepsin but not autophagy inhibition. Our data demonstrate that proteasomal stress activates distinct cell death pathways in neurons, leading to both caspase-dependent and caspase-independent apoptosis, and demonstrate independent roles for Puma and lysosomal permeabilization in this model.


2000 ◽  
Vol 82 ◽  
pp. 178
Author(s):  
Mihoko Hirata ◽  
Remi Tsuchiya ◽  
Miyuki Ogawa ◽  
Nagisa Matsumoto ◽  
Masashi Yamada ◽  
...  

Molecules ◽  
2019 ◽  
Vol 24 (5) ◽  
pp. 867 ◽  
Author(s):  
Hyun Park ◽  
Jong Kang ◽  
Myung Lee

1-O-Hexyl-2,3,5-trimethylhydroquinone (HTHQ) has previously been found to have effective anti-oxidant and anti-lipid-peroxidative activity. We aimed to elucidate whether HTHQ can prevent dopaminergic neuronal cell death by investigating the effect on l-DOPA-induced cytotoxicity in PC12 cells. HTHQ protected from both l-DOPA-induced cell death and superoxide dismutase activity reduction. When assessing the effect of HTHQ on oxidative stress-related signaling pathways, HTHQ inhibited l-DOPA-induced phosphorylation of sustained extracellular signal-regulated kinases (ERK1/2), p38 mitogen-activated protein kinase (MAPK), and c-Jun N-terminal kinase (JNK1/2). HTHQ also normalized l-DOPA-reduced Bcl-2-associated death protein (Bad) phosphorylation and Bcl-2-associated X protein (Bax) expression, promoting cell survival. Taken together, HTHQ exhibits protective effects against l-DOPA-induced cell death through modulation of the ERK1/2-p38MAPK-JNK1/2-Bad-Bax signaling pathway in PC12 cells. These results suggest that HTHQ may show ameliorative effects against oxidative stress-induced dopaminergic neuronal cell death, although further studies in animal models of Parkinson’s disease are required to confirm this.


RSC Advances ◽  
2019 ◽  
Vol 9 (51) ◽  
pp. 29711-29720
Author(s):  
Yan Zhang ◽  
Yunyun Wang ◽  
Yuxun Zhao ◽  
Wen Gu ◽  
Yongqiang Zhu ◽  
...  

A series of novel camphor-based pyrimidine derivatives were synthesized and characterized. We found the compound 3f exhibited strongest anti-tumor activity via ROS-mediated mitochondrial apoptosis pathway.


2004 ◽  
Vol 67 (6) ◽  
pp. 1153-1165 ◽  
Author(s):  
Tatsurou Yagami ◽  
Keiichi Ueda ◽  
Toshiyuki Sakaeda ◽  
Naohiro Itoh ◽  
Gaku Sakaguchi ◽  
...  

2015 ◽  
Vol 38 (4) ◽  
pp. 522-530 ◽  
Author(s):  
Kuan Ming Chiu ◽  
Chia Chan Wu ◽  
Ming Jiuh Wang ◽  
Ming Yi Lee ◽  
Su Jane Wang

2010 ◽  
Vol 107 (6) ◽  
pp. 958-964 ◽  
Author(s):  
Hyo Geun Kim ◽  
Mi Sun Ju ◽  
Dong-Hyun Kim ◽  
Jongki Hong ◽  
Seung-Hun Cho ◽  
...  

2012 ◽  
Vol 35 (1) ◽  
pp. 84-90 ◽  
Author(s):  
Seisuke Mimori ◽  
Yasunobu Okuma ◽  
Masayuki Kaneko ◽  
Koichi Kawada ◽  
Toru Hosoi ◽  
...  

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