A polarized Moody/protein kinase A pathway plays an unrecognized central role in controlling the enormous cell growth and blood–brain barrier integrity in a highly coordinated spatiotemporal manner in brain homeostasis.
The Par complex controls spindle orientation during asymmetric cell division by phosphorylating the tumor suppressor Discs large, overcoming its autoinhibited state, and allowing it to bind the microtubule-binding protein GukHolder.
Functional analyses of in vitro fertilized, preimplanation human embryos reveal that the first lineage segregation depends on cell polarization signaling that is regulated by Phospholipase C (PLC) activity.
HIPPO signaling antagonizes the apical domain of polarized cells, driving cell internalization, regulated gene expression, and cell fate change during formation of pluripotent stem cell progenitors in the mouse embryo.
The enzyme PKMzeta is crucial for the maintenance of long-term memories, but a closely related enzyme provides a back-up should PKMzeta fail, thus explaining the controversy over why deleting the gene for PKMzeta may not appear to impair memory.