Induction of autophagy by cystatin C: a mechanism that protects murine primary cortical neurons and neuronal cell lines.
Induction of autophagy by cystatin C: a mechanism that protects murine primary cortical neurons and neuronal cell lines.
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半胱氨酸蛋白酶抑制剂 C 诱导自噬:一种保护小鼠原代皮质神经元和神经元细胞系的机制。
DOI:
10.1371/journal.pone.0009819
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发表时间:
2010-03-23
期刊:
影响因子:
3.7
通讯作者:
Levy E
中科院分区:
文献类型:
--
作者:
Tizon B;Sahoo S;Yu H;Gauthier S;Kumar AR;Mohan P;Figliola M;Pawlik M;Grubb A;Uchiyama Y;Bandyopadhyay U;Cuervo AM;Nixon RA;Levy E
Cystatin C (CysC) expression in the brain is elevated in human patients with epilepsy, in animal models of neurodegenerative conditions, and in response to injury, but whether up-regulated CysC expression is a manifestation of neurodegeneration or a cellular repair response is not understood. This study demonstrates that human CysC is neuroprotective in cultures exposed to cytotoxic challenges, including nutritional-deprivation, colchicine, staurosporine, and oxidative stress. While CysC is a cysteine protease inhibitor, cathepsin B inhibition was not required for the neuroprotective action of CysC. Cells responded to CysC by inducing fully functional autophagy via the mTOR pathway, leading to enhanced proteolytic clearance of autophagy substrates by lysosomes. Neuroprotective effects of CysC were prevented by inhibiting autophagy with beclin 1 siRNA or 3-methyladenine. Our findings show that CysC plays a protective role under conditions of neuronal challenge by inducing autophagy via mTOR inhibition and are consistent with CysC being neuroprotective in neurodegenerative diseases. Thus, modulation of CysC expression has therapeutic implications for stroke, Alzheimer's disease, and other neurodegenerative disorders.
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影响因子:
5.3
作者:
Boland, Barry;Kumar, Asok;Lee, Sooyeon;Platt, Frances M.;Wegiel, Jerzy;Yu, W. Haung;Nixon, Ralph A.
通讯作者:
Nixon, Ralph A.
影响因子:
2.4
作者:
Chuo, Liang-Jen;Sheu, Wayne H. H.;Kuo, Yu-Min
通讯作者:
Kuo, Yu-Min
影响因子:
11.4
作者:
Cuervo, AM;Mann, L;Dice, JF
通讯作者:
Dice, JF
影响因子:
6.1
作者:
Erlich, S.;Alexandrovich, A.;Pinkas-Kramarski, R.
通讯作者:
Pinkas-Kramarski, R.
影响因子:
4.1
作者:
HALL, A;DALBOGE, H;ABRAHAMSON, M
通讯作者:
ABRAHAMSON, M