Cite as: Cold Spring Harb. Protoc.; 2007; doi:10.1101/pdb.prot4892

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Fate-Mapping Technique: Grafting Fluorescent Cells into Gastrula-Stage Mouse Embryos at 7-7.5 Days Post-coitum

Vanessa J. Franklin1, Heidi Bildsoe, and Patrick P.L. Tam

Embryology Unit, Children’s Medical Research Institute, University of Sydney, Wentworthville, NSW 2145, Australia

1 Corresponding author (vfranklin{at}cmri.usyd.edu.au)


INTRODUCTION

Analysis of the developmental fate of cell populations in different parts of the embryo enables the construction of fate maps. These reveal the organization of the body plan and can presage the expression of molecular characteristics of cell lineages and the formation of body parts. The efficacy of fate-mapping techniques is critically dependent on their ability to track the cells and all their descendants without compromising the development of the embryo. Cell grafting involves isolating a population of genetically tagged cells from a transgenic embryo and grafting them to a defined site in a nontransgenic host embryo. Tissue colonization is analyzed using a genetic tag (e.g., a fluorescent protein that can be visualized noninvasively) that allows tracking of the transplanted cells and their descendants in the host embryo throughout development in culture. Alternatively, a lacZ transgene can be used to localize graft-derived cells histologically. Differentiation of the graft-derived cells can be studied by examining the expression of molecular markers by in situ hybridization of gene transcripts or immunohistochemical detection of lineage-specific proteins. This protocol describes how to graft cells isolated from a donor embryo into the germ layer of a wild-type host mouse embryo at 7-7.5 days post-coitum (dpc).


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H. Bildsoe, V. Franklin, and P. P.L. Tam
Fate-Mapping Technique: Using Carbocyanine Dyes for Vital Labeling of Cells in Gastrula-Stage Mouse Embryos Cultured In Vitro
CSH Protocols, December 1, 2007; 2007(24): pdb.prot4915 - pdb.prot4915.
[Abstract] [Full Text]