Expression of beta-1,4-galactosyltransferase-I in rat during inflammation.
beta-1,4-Galactosyltransferase-I (beta-1,4-GalT-I) which is one of the best-studied glycosyltransferases, plays a key role in the synthesis of selectin ligands such as sialy Lewis (sLe( x )) and sulfated sLe( x ). Previous studies showed that inflammatory responses of beta-1,4-GalT-I-deficient mice were impaired because of the defect in selectin-ligand biosynthesis. However, the expression of beta-1,4-GalT-I during inflammation and its biological function remains to be elucidated. Real-time PCR showed that intraperitoneal administration of LPS strongly induced beta-1,4-GalT-I mRNA expression in the lung, heart, liver, spleen, kidney, lymph node, hippocampus, and testis, as well as in the cerebral cortex. In the rat lung, liver and testis, LPS stimulation of beta-1,4-GalT-I mRNA expression is time-dependent and biphasic. Lectin-fluorescent staining with RCA-I showed that LPS induced expression of galactose-containing glycans in rat lung and liver to the higher lever. Morphology analysis observed that galactose-containing glycans and beta-1,4-GalT-I mRNA was mostly expressed in neutrophils, macrophages and endothelial cells. These findings indicated that beta-1,4-GalT-I may play an important role in the inflammation reaction.
Qian
Ji
J
Department of Microbiology and Immunology, Medical School of Nantong University (Former Nantong Medical College), Nantong 226001, People's Republic of China.
Cheng
Chun
C
Liu
Haiou
H
Chen
Jianping
J
Yan
Meijuan
M
Niu
Shuqiong
S
Qin
Jing
J
Sun
Linlin
L
Liu
Lei
L
Gu
Jianxin
J
Shen
Aiguo
A
D000818:Animals; D004195:Disease Models, Animal; D042783:Endothelial Cells / Q000201:enzymology; D005690:Galactose / Q000378:metabolism; D005700:Galactosyltransferases / Q000235:genetics / Q000378:metabolism*; D015971:Gene Expression Regulation, Enzymologic; D017403:In Situ Hybridization; D007249:Inflammation / Q000139:chemically induced / Q000201:enzymology* / Q000235:genetics / Q000473:pathology; D008070:Lipopolysaccharides; D008099:Liver / Q000201:enzymology / Q000473:pathology; D008168:Lung / Q000201:enzymology / Q000473:pathology; D008264:Macrophages / Q000201:enzymology; D008297:Male; D008856:Microscopy, Fluorescence; D009504:Neutrophils / Q000201:enzymology; D016133:Polymerase Chain Reaction; D011134:Polysaccharides / Q000378:metabolism; D012333:RNA, Messenger / Q000378:metabolism; D051381:Rats; D017207:Rats, Sprague-Dawley; D013997:Time Factors
D008070:Lipopolysaccharides; D011134:Polysaccharides; D012333:RNA, Messenger; D005700:Galactosyltransferases; C119701:beta-1,4-galactosyltransferase I; D005690:Galactose