GLYCOSAMINOGLYCAN PROFILE of PERITONEAL and BONE MARROW-DERIVED MACROPHAGES - CHANGES ASSOCIATED WITH MACROPHAGE ACTIVATION

GLYCOSAMINOGLYCAN PROFILE of PERITONEAL and BONE MARROW-DERIVED MACROPHAGES - CHANGES ASSOCIATED WITH MACROPHAGE ACTIVATION

Author Michelacci, Y. M. Google Scholar
Petricevich, V. L. Google Scholar
Institution INST BUTANTAN
Universidade Federal de São Paulo (UNIFESP)
Abstract 1. We have analysed the glycosaminoglycan patterns of peritoneal and bone marrow-derived macrophages obtained from four different mouse strains which are resistant (A/J) or susceptible (BALB/c, DBA and C-57) to murine hepatitis virus type 3 (MHV3) infection. the glycosaminoglycans were biosynthetically labelled by exposing the macrophages to S-35-sulphate. the medium and cell fractions were collected and the S-35-glycosaminoglycans formed were identified by a combination of agarose gel electrophoresis and enzymatic degradation with bacterial mucopolysaccharidases.2. Both peritoneal and bone marrow-derived macrophages synthesize and secrete a mixture of dermatan sulphate, heparan sulphate and chondroitin sulphate. Dermatan sulphate is the main glycosaminoglycan and most of the synthesized glycosaminoglycans are released to the culture medium.3. the glycosaminoglycan patterns vary depending on the macrophage source. Bone marrow-derived cells synthesize glycosaminoglycans at lower rates, release a lower glycosaminoglycan percentage to the culture medium and express higher amounts of heparan sulphate in comparison with their peritoneal counterparts. Furthermore, LPS-induced activation leads to an increased glycosaminoglycan expression in bone marrow-derived macrophages and to a decrease in S-35-glycosaminoglycans of peritoneal macrophages from BALB/c, A/J and C-57 mice.4. We have not established any correlation between macrophage glycosaminoglycans and resistance to MHV3 infection, since the glycosaminoglycan patterns of resistant (A/J) and susceptible (BALB/c, DBA and C-57) mouse macrophages are similar. Furthermore, the in vitro infection of both control and LPS-activated peritoneal macrophages with MHV3 did not cause any changes in the expression of glycosaminoglycans.
Language English
Date 1991-01-01
Published in Comparative Biochemistry and Physiology B-biochemistry & Molecular Biology. Oxford: Pergamon-Elsevier B.V., v. 100, n. 3, p. 617-625, 1991.
ISSN 0305-0491 (Sherpa/Romeo, impact factor)
Publisher Elsevier B.V.
Extent 617-625
Origin http://dx.doi.org/10.1016/0305-0491(91)90229-7
Access rights Closed access
Type Article
Web of Science ID WOS:A1991GY82600029
URI http://repositorio.unifesp.br/handle/11600/25185

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