KymoAnalyzer: A Software Tool for the Quantitative Analysis of Intracellular Transport in Neurons

Abstract
In axons, proper localization of proteins, vesicles, organelles, and other cargoes is accomplished by the highly regulated coordination of kinesins and dyneins, molecular motors that bind to cargoes and translocate them along microtubule (MT) tracks. Impairment of axonal transport is implicated in the pathogenesis of multiple neurodegenerative disorders including Alzheimer's and Huntington's diseases. To understand how MT‐based cargo motility is regulated and to delineate its role in neurodegeneration, it is critical to analyze the detailed dynamics of moving cargoes inside axons. Here, we present KymoAnalyzer, a software tool that facilitates the robust analysis of axonal transport from time‐lapse live‐imaging sequences. KymoAnalyzer is an open‐source software that automatically classifies particle trajectories and systematically calculates velocities, run lengths, pauses, and a wealth of other parameters that are characteristic of motor‐based transport. We anticipate that laboratories will easily use this package to unveil previously uncovered intracellular transport details of individually‐moving cargoes inside neurons.

Synopsis
KymoAnalyzer is an open‐source ImageJ package designed for the analysis of the intracellular transport of fluorescently‐labeled cargoes and molecular motors in neuronal projections, as well as in vitro, on isolated microtubules. This semi‐automated software generates kymographs from time‐lapse movies, guides the user i...

Source: Traffic - September 30, 2016 Category: Research Authors: Sylvia Neumann, Romain Chassefeyre, George E. Campbell, Sandra E. Encalada Tags: Toolbox Source Type: research