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231224s2014 xx |||||o 00| ||eng c |
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|a 10.2144/000114228
|2 doi
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|a eng
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1 |
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|a Fyk-Kolodziej, Bozena
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Marking cells with infrared fluorescent proteins to preserve photoresponsiveness in the retina
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|c 2014
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 20.07.2015
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|a Date Revised 10.03.2022
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|a published: Electronic-eCollection
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|a Citation Status MEDLINE
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|a Green fluorescent protein (GFP) and its derivatives are broadly used in biomedical experiments for labeling particular cells or molecules. In the mouse retina, the light (~500 nm) used to excite GFP can also lead to photoreceptor bleaching (peak ~500 nm), which diminishes photoreceptor-mediated synaptic transmission in the retinal network. To overcome this problem, we investigated the use of infrared fluorescent protein (iRFP) as a marker since it is excited by light in the near-infrared range that would not damage the photoresponsiveness of the retina. Initially, we tested iRFP expression in human embryonic kidney 293 (HEK293) cells to confirm that conventional fluorescence microscopy can detect iRFP fluorescence. We next introduced the iRFP plasmid into adeno-associated virus 2 (AAV-2) and injected the resulting AAV-2 solution into the intraocular space. Retinal neurons were found to successfully express iRFP three weeks post-injection. Light-evoked responses in iRFP-marked cells were assessed using patch clamping, and light sensitivity was found to be similar in iRFP-expressing cells and non-iRFP-expressing cells, an indication that iRFP expression and detection do not affect retinal light responsiveness. Taken together, our results suggest iRFP can be a new tool for vision research, allowing for single-cell recordings from an iRFP marked neuron using conventional fluorescence microscopy
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|a Journal Article
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|a Research Support, N.I.H., Extramural
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|a Research Support, Non-U.S. Gov't
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|a AAV
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|a iRFP
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|a light response
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|a retina
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|a Bacterial Proteins
|2 NLM
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|a Luminescent Proteins
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|a Green Fluorescent Proteins
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|a 147336-22-9
|2 NLM
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| 700 |
1 |
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|a Hellmer, Chase B
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ichinose, Tomomi
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t BioTechniques
|d 1988
|g 57(2014), 5 vom: 01. Nov., Seite 245-53
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|x 1940-9818
|7 nnns
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|g volume:57
|g year:2014
|g number:5
|g day:01
|g month:11
|g pages:245-53
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|u http://dx.doi.org/10.2144/000114228
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