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9

Met Tyrosine Kinase Deleted in Liver Progenitor Oval Cells Increases Sensitivity to Apoptosis in Vitro

jerry submitted, created time 7 months 2 weeks (ajp.amjpathol.org)

The hepatocyte growth factor (HGF)/Met signaling system is essential for liver development, homeostasis, and function. In this study, the researchers took advantage of a liver-specific, Met-conditional knockout mouse generated in their laboratory to address the molecular mechanisms of HGF/Met signaling in adult liver progenitor cell (oval cell) biology. It reveals a critical, functional role for Met in oval cell survival through an autocrine mechanism.

5

Netrin signaling leading to directed growth cone steering

amanda submitted, created time 1 year 9 months (www.sciencedirect.com)

"In the developing nervous system, nerve cells and axons respond to various attractive and repulsive guidance cues while traveling to their final destination. Netrins are bifunctional guidance cues that attract several classes of axons but repel others. The response of an axon to netrins is dictated by the composition of netrin receptors on the cell surface and the internal state of the growth cone. Recent analyses have identified several signal transduction pathways that contribute to netrin-mediated guidance

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