Biological characterization and optical imaging of brain-derived neurotrophic factor-green fluorescent protein suggest an activity-dependent local release of brain-derived neurotrophic factor in neurites of cultured hippocampal neurons

2001 ◽  
Vol 64 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Masami Kojima ◽  
Nobuyuki Takei ◽  
Tadahiro Numakawa ◽  
Yasuyuki Ishikawa ◽  
Shingo Suzuki ◽  
...  
2008 ◽  
Vol 181 (6) ◽  
pp. 1027-1039 ◽  
Author(s):  
Junghoon Ha ◽  
Kevin W.-H. Lo ◽  
Kenneth R. Myers ◽  
Tiffany M. Carr ◽  
Michael K. Humsi ◽  
...  

Cytoplasmic dynein is the multisubunit motor protein for retrograde movement of diverse cargoes to microtubule minus ends. Here, we investigate the function of dynein variants, defined by different intermediate chain (IC) isoforms, by expressing fluorescent ICs in neuronal cells. Green fluorescent protein (GFP)–IC incorporates into functional dynein complexes that copurify with membranous organelles. In living PC12 cell neurites, GFP–dynein puncta travel in both the anterograde and retrograde directions. In cultured hippocampal neurons, neurotrophin receptor tyrosine kinase B (TrkB) signaling endosomes are transported by cytoplasmic dynein containing the neuron-specific IC-1B isoform and not by dynein containing the ubiquitous IC-2C isoform. Similarly, organelles containing TrkB isolated from brain by immunoaffinity purification also contain dynein with IC-1 but not IC-2 isoforms. These data demonstrate that the IC isoforms define dynein populations that are selectively recruited to transport distinct cargoes.


eNeuro ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. ENEURO.0462-19.2019 ◽  
Author(s):  
Erin Wosnitzka ◽  
Xinsheng Nan ◽  
Jeff Nan ◽  
Pedro Chacón-Fernández ◽  
Lothar Kussmaul ◽  
...  

2002 ◽  
Vol 88 (1) ◽  
pp. 409-421 ◽  
Author(s):  
H. Nadeau ◽  
H. A. Lester

The neuron restrictive silencer factor (NRSF/REST) has been shown to bind to the promoters of many neuron-specific genes and is able to suppress transcription of Na+channels in PC12 cells, although its functional effect in terminally differentiated neurons is unknown. We constructed lentiviral vectors to express NRSF as a bicistronic message with green fluorescent protein (GFP) and followed infected hippocampal neurons in culture over a period of 1–2 wk. NRSF-expressing neurons showed a time-dependent suppression of Na+channel function as measured by whole cell electrophysiology. Suppression was reversed or prevented by the addition of membrane-permeable cAMP analogues and enhanced by cAMP antagonists but not affected by increasing protein expression with a viral enhancer. Secondary effects, including altered sensitivity to glutamate and GABA and reduced outward K+currents, were duplicated by culturing GFP-infected control neurons in TTX. The striking similarity of the phenotypes makes NRSF potentially useful as a genetic “silencer” and also suggests avenues of further exploration that may elucidate the transcription factor's in vivo role in neuronal plasticity.


2002 ◽  
Vol 22 (17) ◽  
pp. 7580-7585 ◽  
Author(s):  
Maki K. Yamada ◽  
Kohsuke Nakanishi ◽  
Shizu Ohba ◽  
Takeshi Nakamura ◽  
Yuji Ikegaya ◽  
...  

2010 ◽  
Vol 2010 (4) ◽  
pp. pdb.prot5406-pdb.prot5406 ◽  
Author(s):  
R. Malinow ◽  
Y. Hayashi ◽  
M. Maletic-Savatic ◽  
S. H. Zaman ◽  
J.-C. Poncer ◽  
...  

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