Development, Vol 109, Issue 4 821-832, Copyright © 1990 by Company of Biologists

JOURNAL ARTICLES

Single cell transplantation reveals interspecific cell communication in Drosophila chimeras

T Becker and GM Technau
Institut fur Genetik-Zellbiologie, Universitat Mainz, FRG.

Cell-cell communication is not only a common strategy for cell fate specification in vertebrates, but plays important roles in invertebrate development as well. We report here on experiments testing the compatibility of mechanisms specifying cell fate among six different Drosophila species. Following interspecific transplantation, the development of single ectodermal cells was traced in order to test their abilities to proliferate and differentiate in a heterologous environment. Despite considerable differences in cell size and length of cell cycle among some of the species, the transplants gave rise to fully differentiated clones that were integrated into the host tissue. Clones comprised cells of epidermal and/or neural histotypes, indicating that mechanisms mediating the epidermal/neural dichotomy in the ectoderm are conserved between the species. Cells of the neural lineages differentiated into neurones, glia, or both. Moreover, heterologous neurones sent out axons that followed major pathways along nerves and within the neuropile, demonstrating their ability to recognize positional cues in the heterologous CNS of the host.

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				G Udolph, A Prokop, T Bossing, and G. Technau A common precursor for glia and neurons in the embryonic CNS of Drosophila gives rise to segment-specific lineage variants Development, January 7, 1993; 118(3): 765 - 775. [Abstract] [PDF]