This script was used to quantify Hoechst-dense 3D regions in the nuclei of neurons. It uses functions from the scikit-image Python library. Nuclei were segmented on a max-projected image of nuclear signal. For segmentation, max-projected images were gaussian blurred (sigma = 2) and manually thresholded. Binary images were then subjected to a morphological opening and filling of holes, and then nuclear regions were labeled. To identify dense nuclear objects, the script looped through each nucleus individually. The 3D nucleus was subjected to a gaussian blur (sigma = 3), and was empirically thresholded by taking signal above the mean + 2.35*std. The binary image was then subjected to morphological opening and a watershedding algorithm to distinguish individual dense objects that were touching. The segmented regions were then labeled and the number of voxels per dense object was measured.
Code for Li, Coffey et al 2020
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jehenninger/MECP2_neuron
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