Abstract:
:Leucine-rich alpha(2)-glycoprotein (LRG) is a plasma protein in which leucine-rich repeats (LRRs) were first discovered. Although the physiological function of LRG is not known, increases in the serum level of LRG have been reported in various diseases. In this study, we found that LRG was induced by recombinant human IL-6 in human hepatoma HepG2 cells. The induction of LRG by IL-6 was up-regulated synergistically with either IL-1beta or TNFalpha in a pattern similar to those for type 1 acute-phase proteins. We also found that lipopolysaccharide (LPS) administered intraperitoneally to mice enhanced dose-dependently the expression of LRG mRNA in the liver as well as those for mouse major acute-phase proteins. These results strongly suggest that LRG was a secretory type 1 acute-phase protein whose expression was up-regulated by the mediator of acute-phase response.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Shirai R,Hirano F,Ohkura N,Ikeda K,Inoue Sdoi
10.1016/j.bbrc.2009.03.104subject
Has Abstractpub_date
2009-05-15 00:00:00pages
776-9issue
4eissn
0006-291Xissn
1090-2104pii
S0006-291X(09)00596-8journal_volume
382pub_type
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