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HDAC6 alpha-synuclein

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https://www.readbyqxmd.com/read/24932665/interplay-between-hdac6-and-its-interacting-partners-essential-roles-in-the-aggresome-autophagy-pathway-and-neurodegenerative-diseases
#1
REVIEW
Jin Yan
Cytoplasmic localization and possession of two deacetylase domains and a ubiquitin-binding domain make histone deacetylase 6 (HDAC6) a unique histone deacetylase. HDAC6 interacts with a number of proteins in the cytoplasm. Some of these proteins can be deacetylated by HDAC6 deacetylase activity. Others can affect HDAC6 functions by modulating its catalytic activity or ubiquitin-binding capability. Over the last decade, HDAC6 has been shown to play important roles in the aggresome-autophagy pathway, which selectively targets on protein aggregates or damaged organelles for their accumulation and clearance in cells...
September 2014: DNA and Cell Biology
https://www.readbyqxmd.com/read/23936437/autophagic-impairment-contributes-to-systemic-inflammation-induced-dopaminergic-neuron-loss-in-the-midbrain
#2
Hui-Fen Zheng, Ya-Ping Yang, Li-Fang Hu, Mei-Xia Wang, Fen Wang, Li-Dan Cao, Da Li, Cheng-Jie Mao, Kang-Ping Xiong, Jian-Da Wang, Chun-Feng Liu
BACKGROUND: Neuroinflammation plays an important role in the pathogenesis of Parkinson's disease (PD), inducing and accelerating dopaminergic (DA) neuron loss. Autophagy, a critical mechanism for clearing misfolded or aggregated proteins such as α-synuclein (α-SYN), may affect DA neuron survival in the midbrain. However, whether autophagy contributes to neuroinflammation-induced toxicity in DA neurons remains unknown. RESULTS: Intraperitoneal injection of lipopolysaccharide (LPS, 5 mg/kg) into young (3-month-old) and aged (16-month-old) male C57BL/6J mice was observed to cause persistent neuroinflammation that was associated with a delayed and progressive loss of DA neurons and accumulation of α-SYN in the midbrain...
2013: PloS One
https://www.readbyqxmd.com/read/23629650/tubulin-polymerization-promoting-protein-tppp-p25%C3%AE-promotes-unconventional-secretion-of-%C3%AE-synuclein-through-exophagy-by-impairing-autophagosome-lysosome-fusion
#3
Patrick Ejlerskov, Izabela Rasmussen, Troels Tolstrup Nielsen, Ann-Louise Bergström, Yumi Tohyama, Poul Henning Jensen, Frederik Vilhardt
Aggregation of α-synuclein can be promoted by the tubulin polymerization-promoting protein/p25α, which we have used here as a tool to study the role of autophagy in the clearance of α-synuclein. In NGF-differentiated PC12 catecholaminergic nerve cells, we show that de novo expressed p25α co-localizes with α-synuclein and causes its aggregation and distribution into autophagosomes. However, p25α also lowered the mobility of autophagosomes and hindered the final maturation of autophagosomes by preventing their fusion with lysosomes for the final degradation of α-synuclein...
June 14, 2013: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/21235576/hdac6-regulates-aggresome-autophagy-degradation-pathway-of-%C3%AE-synuclein-in-response-to-mpp-induced-stress
#4
COMPARATIVE STUDY
Min Su, Ji-Jun Shi, Ya-Ping Yang, Jun Li, Yan-Ling Zhang, Jin Chen, Li-Fang Hu, Chun-Feng Liu
Increasing evidence suggests that the ubiquitin-binding histone deacetylase-6 (HDAC6) plays an important role in the clearance of misfolded proteins by autophagy. In this study, we treated PC-12 cells over-expressing human mutant (A53T) α-synuclein (α-syn) and SH-SY5Y cells with MPP(+). It was found that HDAC6 expression significantly increased and mainly colocalized with α-syn in the perinuclear region to form aggresome-like bodies. HDAC6 deficiency blocked the formation of aggresome-like bodies and interfered with the autophagy in response to MPP(+)-induced stress...
April 2011: Journal of Neurochemistry
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