EASI-FISH for thick tissue defines lateral hypothalamus spatio-molecular organization.
Cell
; 184(26): 6361-6377.e24, 2021 12 22.
Article
en En
| MEDLINE
| ID: mdl-34875226
ABSTRACT
Determining the spatial organization and morphological characteristics of molecularly defined cell types is a major bottleneck for characterizing the architecture underpinning brain function. We developed Expansion-Assisted Iterative Fluorescence In Situ Hybridization (EASI-FISH) to survey gene expression in brain tissue, as well as a turnkey computational pipeline to rapidly process large EASI-FISH image datasets. EASI-FISH was optimized for thick brain sections (300 µm) to facilitate reconstruction of spatio-molecular domains that generalize across brains. Using the EASI-FISH pipeline, we investigated the spatial distribution of dozens of molecularly defined cell types in the lateral hypothalamic area (LHA), a brain region with poorly defined anatomical organization. Mapping cell types in the LHA revealed nine spatially and molecularly defined subregions. EASI-FISH also facilitates iterative reanalysis of scRNA-seq datasets to determine marker-genes that further dissociated spatial and morphological heterogeneity. The EASI-FISH pipeline democratizes mapping molecularly defined cell types, enabling discoveries about brain organization.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Hibridación Fluorescente in Situ
/
Área Hipotalámica Lateral
Límite:
Animals
Idioma:
En
Año:
2021
Tipo del documento:
Article