Abstract:
:Mapping neuroanatomy is a foundational goal towards understanding brain function. Electron microscopy (EM) has been the gold standard for connectivity analysis because nanoscale resolution is necessary to unambiguously resolve synapses. However, molecular information that specifies cell types is often lost in EM reconstructions. To address this, we devise a light microscopy approach for connectivity analysis of defined cell types called spectral connectomics. We combine multicolor labeling (Brainbow) of neurons with multi-round immunostaining Expansion Microscopy (miriEx) to simultaneously interrogate morphology, molecular markers, and connectivity in the same brain section. We apply this strategy to directly link inhibitory neuron cell types with their morphologies. Furthermore, we show that correlative Brainbow and endogenous synaptic machinery immunostaining can define putative synaptic connections between neurons, as well as map putative inhibitory and excitatory inputs. We envision that spectral connectomics can be applied routinely in neurobiology labs to gain insights into normal and pathophysiological neuroanatomy.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Shen FY,Harrington MM,Walker LA,Cheng HPJ,Boyden ES,Cai Ddoi
10.1038/s41467-020-18422-8subject
Has Abstractpub_date
2020-09-15 00:00:00pages
4632issue
1issn
2041-1723pii
10.1038/s41467-020-18422-8journal_volume
11pub_type
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