کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6272475 | 1614781 | 2015 | 51 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The protein l-isoaspartyl (d-aspartyl) methyltransferase protects against dopamine-induced apoptosis in neuroblastoma SH-SY5Y cells
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کلمات کلیدی
6-OHDAPBSMST1NAC6-HydroxydopamineAdoMetN-acetyl-l-cysteineMPTPMAO1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine - 1-methyl-4-phenyl-1،2،3،6-tetrahydropyridine2′,7′-dichlorodihydrofluorescein diacetate - 2 '، 7'-dichlorodihydrofluorescein diacetateDMSO - DMSOH2DCFDA - H2DCFD بهS-adenosyl-L-methionine - S-adenosyl-L-metioninePIMT - TMIPParkinson’s disease - بیماری پارکینسونDopamine - دوپامینDimethyl sulfoxide - دیمتیل سولفواکسیدPhosphate-buffered saline - محلول نمک فسفات با خاصیت بافریmonoamine oxidase - مونوآمین اکسیدازها mammalian sterile 20-like kinase 1 - پستانداران مانند کیناز 20 مانند پستانداران 1
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
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چکیده انگلیسی
Parkinson's disease (PD) is the most common neurodegenerative motor disorder in the world. The main causes of neurodegeneration in PD are mitochondrial impairment and oxidative stress promoted by dopamine (DA) metabolism in the cytosol. Protein l-isoaspartyl (d-aspartyl) methyltransferase (PIMT) is a protein repair enzyme with anti-apoptotic properties. We previously reported that PIMT was downregulated at both gene and protein levels by DA-induced oxidative stresses in SH-SY5Y neuroblastoma cells. The purpose of the current study was to investigate the anti-apoptotic function of PIMT toward DA-induced cell death to better understand its specific neuroprotective role. Overexpression of wild-type PIMT, in contrast to its inactive mutant, protected SH-SY5Y cells from cell death and caspase 3 activation upon DA treatments. The intrinsic pathway of apoptosis as measured by caspase 9 activity was triggered by reactive oxygen species produced from DA metabolism, and overexpression of wild-type PIMT completely prevented caspase 9 activity stimulated by DA. In addition, cells overexpressing wild-type PIMT produced significantly less reactive oxygen species despite DA treatment compared to cells that do not overexpress PIMT. Together, these data indicate that DA-associated PIMT downregulation is an important event contributing to neuronal cell death. More importantly, the PIMT anti-apoptotic capacity seems to be dependent on its involvement in the cellular antioxidant machinery.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 295, 4 June 2015, Pages 139-150
Journal: Neuroscience - Volume 295, 4 June 2015, Pages 139-150
نویسندگان
D. Ouazia, L.-C. Jr., Ã. Rassart, R.R. Desrosiers,