Autophagic impairment contributes to systemic inflammation-induced dopaminergic neuron loss in the midbrain.
Autophagic impairment contributes to systemic inflammation-induced dopaminergic neuron loss in the midbrain.
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自噬损伤导致中脑系统性炎症引起的多巴胺能神经元损失
DOI:
10.1371/journal.pone.0070472
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Liu CF
中科院分区:
文献类型:
--
作者:
Zheng HF;Yang YP;Hu LF;Wang MX;Wang F;Cao LD;Li D;Mao CJ;Xiong KP;Wang JD;Liu CF
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. 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. The autophagic substrate-p62 (SQSTM1) persistently increased, whereas LC3-II and HDAC6 exhibited early increases followed by a decline. In vitro studies further demonstrated that TNF-α induced cell death in PC12 cells. Moreover, a sublethal dose of TNF-α (50 ng/ml) increased the expression of LC3-II, p62, and α-SYN, implying that TNF-α triggered autophagic impairment in cells. Neuroinflammation may cause autophagic impairment, which could in turn result in DA neuron degeneration in midbrain.
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影响因子:
3.3
作者:
Carew JS;Kelly KR;Nawrocki ST
通讯作者:
Nawrocki ST
影响因子:
5.3
作者:
McGuire, SO;Ling, ZD;Carvey, PM
通讯作者:
Carvey, PM
影响因子:
5.1
作者:
Infante, J.;Garcia-Gorostiaga, I.;Combarros, O.
通讯作者:
Combarros, O.
DOI:
10.1111/j.1749-6632.2002.tb04077.x
发表时间:
2002-01-01
期刊:
NITRIC OXIDE: NOVEL ACTIONS, DELETERIOUS EFFECTS AND CLINICAL POTENTIAL
影响因子:
--
作者:
Liu, B;Gao, HM;Hong, JS
通讯作者:
Hong, JS
DOI:
10.1073/pnas.1014156108
发表时间:
2011-01-25
影响因子:
11.1
作者:
Fujita, Ken-ichi;Maeda, Daisuke;Srinivasula, Srinivasa M.
通讯作者:
Srinivasula, Srinivasa M.