The channel kinase, TRPM7, is required for early embryonic development.

Journal Article (Journal Article)

Global disruption of transient receptor potential-melastatin-like 7 (Trpm7) in mice results in embryonic lethality before embryonic day 7. Using tamoxifen-inducible disruption of Trpm7 and multiple Cre recombinase lines, we show that Trpm7 deletion before and during organogenesis results in severe tissue-specific developmental defects. We find that Trpm7 is essential for kidney development from metanephric mesenchyme but not ureteric bud. Disruption of neural crest Trpm7 at early stages results in loss of pigment cells and dorsal root ganglion neurons. In contrast, late disruption of brain-specific Trpm7 after embryonic day 10.5 does not alter normal brain development. We developed induced pluripotent stem cells and neural stem (NS) cells in which Trpm7 disruption could be induced. Trpm7(-/-) NS cells retained the capacities of self-renewal and differentiation into neurons and astrocytes. During in vitro differentiation of induced pluripotent stem cells to NS cells, Trpm7 disruption prevents the formation of the NS cell monolayer. The in vivo and in vitro results demonstrate a temporal requirement for the Trpm7 channel kinase during embryogenesis.

Full Text

Duke Authors

Cited Authors

  • Jin, J; Wu, L-J; Jun, J; Cheng, X; Xu, H; Andrews, NC; Clapham, DE

Published Date

  • January 31, 2012

Published In

Volume / Issue

  • 109 / 5

Start / End Page

  • E225 - E233

PubMed ID

  • 22203997

Pubmed Central ID

  • PMC3277139

Electronic International Standard Serial Number (EISSN)

  • 1091-6490

Digital Object Identifier (DOI)

  • 10.1073/pnas.1120033109


  • eng

Conference Location

  • United States