Quantifying inter-organelle membrane contact sites using proximity ligation assay in fixed optic nerve sections.
Quantifying inter-organelle membrane contact sites using proximity ligation assay in fixed optic nerve sections.
复制标题
使用固定视神经截面中的接近连接测定法量化轨道间膜接触位点。
DOI:
10.1016/j.exer.2021.108793
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发表时间:
2021-12
影响因子:
3.4
通讯作者:
Yu-Wai-Man P
中科院分区:
文献类型:
--
作者:
Ching J;Osborne A;Eva R;Prudent J;Yu-Wai-Man P
Membrane contact sites (MCS) play crucial roles in cell physiology with dysfunction in several MCS proteins being linked with neurological and optic nerve diseases. Although there have been significant advances in imaging these interactions over the past two decades with advanced electron microscopy techniques, super-resolution imaging and proximity-dependent fluorescent reporters, a technique to observe and quantify MCS in mammalian optic nerve tissues has not yet been reported. We demonstrate for the first time that proximity ligation assay (PLA), a technique already used in mammalian cell lines, can be used as an efficient method of quantifying inter-organelle contact sites, namely mitochondria-endoplasmic reticulum (ER) and mitochondria-late-endosomes, in mammalian optic nerve tissues treated with adeno-associated virus (AAV) gene therapy with wild-type or phosphomimetic (active) protrudin. PLA utilises complementary single-stranded DNA oligomers bound to secondary antibodies that hybridise and complete a circular piece of DNA when the primary antibodies of interest interact. These interactions can be detected by amplifying the circular DNA and adding fluorescent probes. We show that PLA is a useful method that can be used to quantify MCS in optic nerve tissues. We have found that upregulation of protrudin with gene therapy significantly increases the number of mitochondria-ER and mitochondria-Rab7-late endosomes contact sites in optic nerves.
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DOI:
10.1126/science.aan5835
发表时间:
2018-08-03
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Wu H;Carvalho P;Voeltz GK
通讯作者:
Voeltz GK
DOI:
10.1083/jcb.201607099
发表时间:
2016-11-21
期刊:
The Journal of cell biology
影响因子:
--
作者:
Yin X;Kidd GJ;Ohno N;Perkins GA;Ellisman MH;Bastian C;Brunet S;Baltan S;Trapp BD
通讯作者:
Trapp BD
影响因子:
3.7
作者:
Brown, R. Lane;Xiong, Wei-Hong;Duvoisin, Robert M.
通讯作者:
Duvoisin, Robert M.
影响因子:
3.4
作者:
Caminos, Elena;Vaquero, Cecilia F.;Martinez-Galan, Juan R.
通讯作者:
Martinez-Galan, Juan R.
影响因子:
46.9
作者:
Fredriksson, S;Gullberg, M;Landegren, U
通讯作者:
Landegren, U