Connect-seq to superimpose molecular on anatomical neural circuit maps

Author:

Hanchate Naresh K.,Lee Eun Jeong,Ellis Andria,Kondoh Kunio,Kuang Donghui,Basom Ryan,Trapnell Cole,Buck Linda B.

Abstract

AbstractThe mouse brain contains ~100 million neurons interconnected in a vast array of neural circuits. The identities and functions of individual neuronal components of most circuits are undefined. Here we describe a method, termed ‘Connect-seq’, which combines retrograde viral tracing and single cell transcriptomics to uncover the molecular identities of upstream neurons in a specific circuit and the signaling molecules they use to communicate. Connect-seq can generate a molecular map that can be superimposed on a neuroanatomical map to permit molecular and genetic interrogation of how the neuronal components of a circuit control its function. Application of this method to hypothalamic neurons controlling physiological responses to fear and stress reveal subsets of upstream neurons that express diverse constellations of signaling molecules and can be distinguished by their anatomical locations.

Publisher

Cold Spring Harbor Laboratory

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