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Medicine and Health Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Medical Sciences

2010

University of Alabama at Birmingham

GSK3

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Full-Text Articles in Medicine and Health Sciences

Canonical Wnt Signaling By The Proteolytic Processing Of Lrp6, Brandon Richard Beagle Jan 2010

Canonical Wnt Signaling By The Proteolytic Processing Of Lrp6, Brandon Richard Beagle

All ETDs from UAB

Low density Lipoprotein receptor Related 6 (LRP6) functions as an essential co-receptor for Wnt/Beat;-catenin signaling as pathway activation, reflected by cytosolic Beta-catenin stabilization and TCF/LEF-1 transactivation, requires Glycogen Synthase Kinase 3Beta(GSK3Beta)-mediated phosphorylation of multiple PPP(S/T)P motifs within the membrane anchored LRP6 intracellular domain. Additionally, LRP6 undergoes a proteolytic cleavage event resulting in the formation of a soluble LRP6 intracellular domain (LRP6-ICD). LRP6-ICD can function within the Wnt/Beta-catenin pathway by interacting with GSK3Beta and attenuating the phosphorylation of GSK3Beta substrates such as cytosolic Beta-catenin as well as stimulate TCF/LEF-1 activity. However, LRP6-ICD's role(s) within the Wnt/Beta-catenin pathway and the mechanism(s) that …


Regulation Of Glycogen Synthase Kinase 3 In The Pathophysiology And Treatment Of Mood Disorders, Abigail Marie Polter Jan 2010

Regulation Of Glycogen Synthase Kinase 3 In The Pathophysiology And Treatment Of Mood Disorders, Abigail Marie Polter

All ETDs from UAB

Mood disorders are devastating psychiatric illnesses that will affect as many as one in every five persons worldwide over the course of their lifetime. Significant gaps still remain in our understanding of these illnesses and outcomes for many patients are far from optimal. Glycogen Synthase Kinase 3 (GSK3) is a protein kinase that is increasingly recognized as playing an important role in a number of neuronal functions, as well as in pathological states such as mood disorders. GSK3 is inhibited in the brain by phosphorylation on an N-terminal serine. Several treatments for mood disorders, including lithium, antidepressants, and atypical antipsychotics …