کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4334133 1614510 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Axon degeneration: context defines distinct pathways
ترجمه فارسی عنوان
دژنراسیون آکسون: زمینه مسیرهای متمایز را مشخص می کند
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب (عمومی)
چکیده انگلیسی


• Axotomy, axon apoptosis, and axon pruning engage distinct pathways of degeneration.
• NMNATs and SARM1 are key mediators of axotomy-induced axon degeneration.
• Context of NGF deprivation defines axon degeneration during apoptosis vs pruning.
• Caspases are activated via distinct mechanisms during apoptosis vs pruning.

Axon degeneration is an essential part of development, plasticity, and injury response and has been primarily studied in mammalian models in three contexts: 1) Axotomy-induced Wallerian degeneration, 2) Apoptosis-induced axon degeneration (axon apoptosis), and 3) Axon pruning. These three contexts dictate engagement of distinct pathways for axon degeneration. Recent advances have identified the importance of SARM1, NMNATs, NAD+ depletion, and MAPK signaling in axotomy-induced Wallerian degeneration. Interestingly, apoptosis-induced axon degeneration and axon pruning have many shared mechanisms both in signaling (e.g. DLK, JNKs, GSK3α/β) and execution (e.g. Puma, Bax, caspase-9, caspase-3). However, the specific mechanisms by which caspases are activated during apoptosis versus pruning appear distinct, with apoptosis requiring Apaf-1 but not caspase-6 while pruning requires caspase-6 but not Apaf-1.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Opinion in Neurobiology - Volume 39, August 2016, Pages 108–115
نویسندگان
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