Advance online publication


The latest research papers, published online ahead of print. These online versions are definitive and may be cited using the digital object identifier (DOI).

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Cell stimulation with optically manipulated microsources

Holger Kress, Jin-Gyu Park, Cecile O Mejean, Jason D Forster, Jason Park, Spencer S Walse, Yong Zhang, Dianqing Wu, Orion D Weiner, Tarek M Fahmy & Eric R Dufresne

Published online: 15 November 2009 | doi:10.1038/nmeth.1400

Microsources positioned with holographic optical tweezers can establish a highly localized, three-dimensional chemical gradient that allows the manipulation of polarization and migration in single cells.


Transgenic microRNA inhibition with spatiotemporal specificity in intact organisms

Carlos M Loya, Cecilia S Lu, David Van Vactor & Tudor A Fulga

Published online: 15 November 2009 | doi:10.1038/nmeth.1402

Tissue-specific expression of microRNA sponges allows precise regulation of microRNA activity in living flies. The authors investigate the role of miR-8 in the formation of neuromuscular junctions in detail.


An auxin-based degron system for the rapid depletion of proteins in nonplant cells

Kohei Nishimura, Tatsuo Fukagawa, Haruhiko Takisawa, Tatsuo Kakimoto & Masato Kanemaki

Published online: 15 November 2009 | doi:10.1038/nmeth.1401

A degradation pathway found in plants, dependent on the hormone auxin, can be transplanted and harnessed to induce rapid and reversible target protein degradation in both yeast and animal cells.


A genetically encoded reporter of synaptic activity in vivo

Elena Dreosti, Benjamin Odermatt, Mario M Dorostkar & Leon Lagnado

Published online: 08 November 2009 | doi:10.1038/nmeth.1399

Fusion of the genetically-encoded calcium indicator GCaMP2 to synaptophysin localizes the sensor to neuron presynaptic terminals and conveys linear responsiveness over a wider range of spike frequencies. The sensor allowed measurement of synaptic activity caused by spiking as well as graded voltage signals during in vivo imaging in zebrafish.


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Automated high-throughput mapping of promoter-enhancer interactions in zebrafish embryos

Jochen Gehrig, Markus Reischl, Éva Kalmár, Marco Ferg, Yavor Hadzhiev, Andreas Zaucker, Chengyi Song, Simone Schindler, Urban Liebel & Ferenc Müller

Published online: 08 November 2009 | doi:10.1038/nmeth.1396

Methods for automated fluorescence imaging allow high-throughput examination of reporter expression patterns in zebrafish embryos. They are applied to mapping promoter-enhancer interactions in this organism.


Optical interrogation of neural circuits in Caenorhabditis elegans

Zengcai V Guo, Anne C Hart & Sharad Ramanathan

Published online: 08 November 2009 | doi:10.1038/nmeth.1397

Neuronal stimulation with channelrhodopsin-2 is combined with calcium fluorescence imaging to study neural connections in intact Caenorhabditis elegans.


Imaging neural activity in worms, flies and mice with improved GCaMP calcium indicators

Lin Tian, S Andrew Hires, Tianyi Mao, Daniel Huber, M Eugenia Chiappe, Sreekanth H Chalasani, Leopoldo Petreanu, Jasper Akerboom, Sean A McKinney, Eric R Schreiter, Cornelia I Bargmann, Vivek Jayaraman, Karel Svoboda & Loren L Looger

Published online: 08 November 2009 | doi:10.1038/nmeth.1398

An improved version of the GCaMP genetically encoded calcium indicator, called GCaMP3, has higher calcium affinity and increased baseline fluorescence, dynamic range and stability. GCaMP3 performs better than existing genetically encoded calcium indicators in several assays and organisms, including in vivo imaging of neuronal signaling in worms, flies and mice.


High-speed nanoscopic tracking of the position and orientation of a single virus

Philipp Kukura, Helge Ewers, Christian Müller, Alois Renn, Ari Helenius & Vahid Sandoghdar

Published online: 01 November 2009 | doi:10.1038/nmeth.1395

A combination of scattering interferometry and single-molecule fluorescence microscopy allows visualization of both the position and orientation of single Simian virus 40 particles on lipid bilayers and provides evidence of viral interaction with receptors in membrane nanodomains.


Until print versions of AOP papers are published, they should be cited in the style "Author(s) Nature Methods advance online publication, day month year (doi:10.1038/nmethXXXXX)". Once the print version (identical to the AOP) is published, it should be cited as follows: "Author(s) Nature Methods volume, page (year); advance online publication, (doi:10.1038/nmethXXXXX)".

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