FRET based ratiometric Ca2+ imaging to investigate immune-mediated neuronal and axonal damage processes in experimental autoimmune encephalomyelitis
FRET based ratiometric Ca2+ imaging to investigate immune-mediated neuronal and axonal damage processes in experimental autoimmune encephalomyelitis
复制标题
基于 FRET 的比率 Ca2 成像研究实验性自身免疫性脑脊髓炎中免疫介导的神经元和轴突损伤过程
DOI:
10.1016/j.jneumeth.2015.04.005
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发表时间:
2015
影响因子:
3
通讯作者:
Zipp F
中科院分区:
文献类型:
--
作者:
Siffrin V;Birkenstock J;Luchtmann D;Gollan R;Baumgart J;Niesner RA;Griesbeck O;Zipp F
BackgroundIrreversible axonal and neuronal damage are the correlate of disability in patients suffering from multiple sclerosis (MS). A sustained increase of cytoplasmic free [Ca2+] is a common upstream event of many neuronal and axonal damage processes and could represent an early and potentially reversible step.New methodWe propose a method to specifically analyze the neurodegenerative aspects of experimental autoimmune encephalomyelitis by Förster Resonance Energy Transfer (FRET) imaging of neuronal and axonal Ca2+dynamics by two-photon laser scanning microscopy (TPLSM).ResultsUsing the genetically encoded Ca2+sensor TN-XXL expressed in neurons and their corresponding axons, we confirm the increase of cytoplasmic free [Ca2+] in axons and neurons of autoimmune inflammatory lesions compared to those in non-inflamed brains. We show that these relative [Ca2+] increases were associated with immune-neuronal interactions.Comparison with existing methodsIn contrast to Ca2+-sensitive dyes the use of a genetically encoded Ca2+sensor allows reliable intraaxonal free [Ca2+] measurements in living anesthetized mice in health and disease. This method detects early axonal damage processes in contrast to e.g. cell/axon morphology analysis, that rather detects late signs of neurodegeneration.ConclusionsThus, we describe a method to analyze and monitor early neuronal damage processes in the brain in vivo.
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影响因子:
3
作者:
Yubo Ren;A. Ridsdale;E. Coderre;P. Stys
通讯作者:
P. Stys
影响因子:
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影响因子:
158.5
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Trapp, BD;Peterson, J;Bö, L
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Bö, L
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Rinnenthal JL;Börnchen C;Radbruch H;Andresen V;Mossakowski A;Siffrin V;Seelemann T;Spiecker H;Moll I;Herz J;Hauser AE;Zipp F;Behne MJ;Niesner R
通讯作者:
Niesner R
影响因子:
82.9
作者:
Nikic, Ivana;Merkler, Doron;Kerschensteiner, Martin
通讯作者:
Kerschensteiner, Martin