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A series of (hetero)arylpyrimidines agonists of the Wnt-β-catenin cellular messaging system have been prepared. These compounds show activity in U2OS cells transfected with Wnt-3a, TCF-luciferase, Dkk-1 and tk-Renilla. Selected compounds show minimal GSK-3β inhibition indicating that the Wnt-β-catenin agonism activity most likely comes from interaction at Wnt-3a/Dkk-1. Two examples 1 and 25 show in...
A single point mutation (G to T) in the low-density lipoprotein receptor related protein 5 (LRP5) gene results in a glycine to valine amino acid change (G171V) and is responsible for an autosomal dominant high bone mass trait (HBM) in two independent kindreds. LRP5 acts as a co-receptor to Wnts with Frizzled family members and transduces Wnt-canonical signals which can be antagonized by LRP5 ligand,...
There is considerable evidence implicating the cAMP-signaling pathway in the anabolic action of PTH; and to date, all PTH and PTHrp peptides that stimulate cyclic AMP are active in animal models of osteogenesis. We have tested two C-terminally truncated peptides, PTH(1–29) and a modified PTH(1–21) (MPTH(1–21)), in in vitro and in vivo assays of PTH action. Each of the C-terminally truncated peptides...
The currently marketed hepatitis B vaccines in the U.S. are based on the recombinant major hepatitis B surface antigen (HBsAg) of hepatitis B virus. Although a large majority of individuals develop protective immunity to HBV-induced disease after three immunizations, routinely a small but a significant percentage of the human population does not respond well to these vaccines. In this report, we describe...
Human adenovirus vectors containing intact or largely deleted E 3 region were used to construct adenovirus-hepatitis B recombinant viruses (Ad-HepB) and shown to produce substantial amount of recombinant protein, hepatitis B surface antigen (HBsAg), in tissue culture. Previously we showed that these viruses were able to elicit good anti-HBs antibodies in a dog model. In the present study,...
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