Overexpression of Mitochondrial Calcium Uniporter Causes Neuronal Death
المؤلفون المشاركون
Granatiero, Veronica
Pacifici, Marco
Raffaello, Anna
De Stefani, Diego
Rizzuto, Rosario
المصدر
Oxidative Medicine and Cellular Longevity
العدد
المجلد 2019، العدد 2019 (31 ديسمبر/كانون الأول 2019)، ص ص. 1-15، 15ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2019-10-16
دولة النشر
مصر
عدد الصفحات
15
التخصصات الرئيسية
الملخص EN
Neurodegenerative diseases are a large and heterogeneous group of disorders characterized by selective and progressive death of specific neuronal subtypes.
In most of the cases, the pathophysiology is still poorly understood, although a number of hypotheses have been proposed.
Among these, dysregulation of Ca2+ homeostasis and mitochondrial dysfunction represent two broadly recognized early events associated with neurodegeneration.
However, a direct link between these two hypotheses can be drawn.
Mitochondria actively participate to global Ca2+ signaling, and increases of [Ca2+] inside organelle matrix are known to sustain energy production to modulate apoptosis and remodel cytosolic Ca2+ waves.
Most importantly, while mitochondrial Ca2+ overload has been proposed as the no-return signal, triggering apoptotic or necrotic neuronal death, until now direct evidences supporting this hypothesis, especially in vivo, are limited.
Here, we took advantage of the identification of the mitochondrial Ca2+ uniporter (MCU) and tested whether mitochondrial Ca2+ signaling controls neuronal cell fate.
We overexpressed MCU both in vitro, in mouse primary cortical neurons, and in vivo, through stereotaxic injection of MCU-coding adenoviral particles in the brain cortex.
We first measured mitochondrial Ca2+ uptake using quantitative genetically encoded Ca2+ probes, and we observed that the overexpression of MCU causes a dramatic increase of mitochondrial Ca2+ uptake both at resting and after membrane depolarization.
MCU-mediated mitochondrial Ca2+ overload causes alteration of organelle morphology and dysregulation of global Ca2+ homeostasis.
Most importantly, MCU overexpression in vivo is sufficient to trigger gliosis and neuronal loss.
Overall, we demonstrated that mitochondrial Ca2+ overload is per se sufficient to cause neuronal cell death both in vitro and in vivo, thus highlighting a potential key step in neurodegeneration.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Granatiero, Veronica& Pacifici, Marco& Raffaello, Anna& De Stefani, Diego& Rizzuto, Rosario. 2019. Overexpression of Mitochondrial Calcium Uniporter Causes Neuronal Death. Oxidative Medicine and Cellular Longevity،Vol. 2019, no. 2019, pp.1-15.
https://search.emarefa.net/detail/BIM-1202294
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Granatiero, Veronica…[et al.]. Overexpression of Mitochondrial Calcium Uniporter Causes Neuronal Death. Oxidative Medicine and Cellular Longevity No. 2019 (2019), pp.1-15.
https://search.emarefa.net/detail/BIM-1202294
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Granatiero, Veronica& Pacifici, Marco& Raffaello, Anna& De Stefani, Diego& Rizzuto, Rosario. Overexpression of Mitochondrial Calcium Uniporter Causes Neuronal Death. Oxidative Medicine and Cellular Longevity. 2019. Vol. 2019, no. 2019, pp.1-15.
https://search.emarefa.net/detail/BIM-1202294
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1202294
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر