Improved methods for marking active neuron populations.
Improved methods for marking active neuron populations.
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DOI:
10.1038/s41467-018-06935-2
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发表时间:
2018-10-25
影响因子:
16.6
通讯作者:
Schreiter ER
中科院分区:
文献类型:
--
作者:
Moeyaert B;Holt G;Madangopal R;Perez-Alvarez A;Fearey BC;Trojanowski NF;Ledderose J;Zolnik TA;Das A;Patel D;Brown TA;Sachdev RNS;Eickholt BJ;Larkum ME;Turrigiano GG;Dana H;Gee CE;Oertner TG;Hope BT;Schreiter ER
Marking functionally distinct neuronal ensembles with high spatiotemporal resolution is a key challenge in systems neuroscience. We recently introduced CaMPARI, an engineered fluorescent protein whose green-to-red photoconversion depends on simultaneous light exposure and elevated calcium, which enabled marking active neuronal populations with single-cell and subsecond resolution. However, CaMPARI (CaMPARI1) has several drawbacks, including background photoconversion in low calcium, slow kinetics and reduced fluorescence after chemical fixation. In this work, we develop CaMPARI2, an improved sensor with brighter green and red fluorescence, faster calcium unbinding kinetics and decreased photoconversion in low calcium conditions. We demonstrate the improved performance of CaMPARI2 in mammalian neurons and in vivo in larval zebrafish brain and mouse visual cortex. Additionally, we herein develop an immunohistochemical detection method for specific labeling of the photoconverted red form of CaMPARI. The anti-CaMPARI-red antibody provides strong labeling that is selective for photoconverted CaMPARI in activated neurons in rodent brain tissue. Methods to directly label active neurons are still lacking. Here the authors develop CaMPARI2, a photoconvertible fluorescent protein sensor for neuronal activity with improved brightness and calcium binding kinetics, as well as an antibody to amplify the activated sensor signal in fixed samples.
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影响因子:
16.2
作者:
Denny CA;Kheirbek MA;Alba EL;Tanaka KF;Brachman RA;Laughman KB;Tomm NK;Turi GF;Losonczy A;Hen R
通讯作者:
Hen R
DOI:
10.1523/jneurosci.4502-12.2013
发表时间:
2013-05-15
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Lambo ME;Turrigiano GG
通讯作者:
Turrigiano GG
DOI:
10.1093/bioinformatics/btp184
发表时间:
2009-06-01
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
Preibisch S;Saalfeld S;Tomancak P
通讯作者:
Tomancak P
影响因子:
25
作者:
Maffei, A;Nelson, SB;Turrigiano, GG
通讯作者:
Turrigiano, GG
影响因子:
5.3
作者:
Nahmani, Marc;Turrigiano, Gina G.
通讯作者:
Turrigiano, Gina G.