Overexpression of Galectin-3 in Macrophages of C57BL/6 mice with Experimental Autoimmune Encephalomyelitis.
- Author:
Dae Seung KIM
1
;
Insun HWANG
;
Suk jae PARK
;
Ginnae AHN
;
Sang Joon PARK
;
Hyun Jeong PARK
;
Hong Gu JOO
;
Youngheun JEE
Author Information
1. College of Veterinary Medicine, Jeju National University, Jeju 690-756, Korea. yhjee@jejunu.ac.kr
- Publication Type:Original Article
- Keywords:
Central Nervous System;
Experimental Autoimmune Encephalomyelitis;
Galectin-3;
macrophage
- MeSH:
Animals;
Apoptosis;
Blotting, Western;
Cell Movement;
Central Nervous System;
Cerebrum;
Encephalomyelitis, Autoimmune, Experimental;
Galectin 3;
Humans;
Immunization;
Macrophages;
Membranes;
Mice;
Models, Animal;
Multiple Sclerosis;
Myelin-Oligodendrocyte Glycoprotein;
Spleen
- From:Korean Journal of Veterinary Research
2011;51(2):139-149
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
Experimental autoimmune encephalomyelitis (EAE) is an inflammatory disease in the murine central nervous system (CNS) and has long been used as an animal model for human multiple sclerosis. Development of EAE requires coordinated expression of a number of genes that are involved in the activation and effector functions of inflammatory cells. Galectin-3 (Gal-3) is a member of the beta-galactoside-binding lectin family and plays an important role in inflammatory responses through its functions on cell activation, cell migration or inhibition of apoptosis. We investigated the functional role of Gal-3 in EAE mice following immunization with myelin oligodendrocyte glycoprotein (MOG)35-55 peptide. During the peak stage of EAE, the localization of Gal-3 in inflammatory cells markedly increased in subarachnoid membranes and perivascular regions of CNS. In contrast, Gal-3 was weakly detected in cerebrum and spinal of the recovery stage of EAE. Consistent with this finding, western blot analysis revealed that Gal-3 expression was significantly increased at the peak stage while it was slightly decreased at the recovery stage in the CNS. In addition, the population of CD11b+ macrophage expressing Gal-3 in spleen of EAE mice was markedly increased compared with control mice. In fact, most of activated macrophages isolated from spleen of EAE mice expressed Gal-3. Taken together, our results demonstrate that the over-expression of Gal-3 in activated macrophages may play a key role in promoting inflammatory cells in the CNS during EAE.
