Molecular recording of mammalian embryogenesis.
Nature
; 570(7759): 77-82, 2019 06.
Article
in En
| MEDLINE
| ID: mdl-31086336
Ontogeny describes the emergence of complex multicellular organisms from single totipotent cells. This field is particularly challenging in mammals, owing to the indeterminate relationship between self-renewal and differentiation, variation in progenitor field sizes, and internal gestation in these animals. Here we present a flexible, high-information, multi-channel molecular recorder with a single-cell readout and apply it as an evolving lineage tracer to assemble mouse cell-fate maps from fertilization through gastrulation. By combining lineage information with single-cell RNA sequencing profiles, we recapitulate canonical developmental relationships between different tissue types and reveal the nearly complete transcriptional convergence of endodermal cells of extra-embryonic and embryonic origins. Finally, we apply our cell-fate maps to estimate the number of embryonic progenitor cells and their degree of asymmetric partitioning during specification. Our approach enables massively parallel, high-resolution recording of lineage and other information in mammalian systems, which will facilitate the construction of a quantitative framework for understanding developmental processes.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Embryonic Development
/
Embryo, Mammalian
Limits:
Animals
Language:
En
Journal:
Nature
Year:
2019
Document type:
Article
Affiliation country:
United States
Country of publication:
United kingdom