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bioRxiv · 10.1101/609032

A 3D molecular atlas of the chick embryonic heart

Anderson, C.·Hill, B.·Lu, H.-C.·Moverley, A.·Yang, Y.·Oliveira, N. M. M.·Baldock, R. A.·Stern, C. D.
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Abstract

We present a detailed analysis of gene expression in the 2-day (HH12) embryonic chick heart. RNA-seq of 13 micro-dissected regions reveals regionalised expression of 15,570 genes. Of these, 132 were studied by in situ hybridisation and a subset (38 genes) was mapped by Optical Projection Tomography or serial sectioning to build a detailed 3-dimensional atlas of expression. We display this with a novel interactive 3-D viewer and as stacks of sections, revealing the boundaries of expression domains and regions of overlap. Analysis of the expression domains also defines some sub-regions distinct from those normally recognised by anatomical criteria at this stage of development, such as a previously undescribed subdivision of the atria into two orthogonal sets of domains (dorsoventral and left-right). We also include a detailed comparison of expression in the chick with the mouse and other species.

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Anderson, C., Hill, B., Lu, H.-C., Moverley, A., Yang, Y., Oliveira, N. M. M., Baldock, R. A., Stern, C. D.. 2019-04-16. A 3D molecular atlas of the chick embryonic heart. https://doi.org/10.1101/609032

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