| Literature DB >> 303685 |
M K Hoffmann, C Galanos, S Koenig, H F Oettgen.
Abstract
The role played by macrophages in two effects of lipopolysaccharide (LPS) on the immune system of the mouse-substitution for helper T cells and induction of B-cell mitosis-has been investigated. C3H/HeJ mice are unresponsive and do not produce (as other strains do) antibody to 2,4,6-trinitrophenol (TNP) conjugated with autologous mouse erythrocytes (MRBC-TNP) in the presence of LPS. We found that C3H/HeJ spleen cells produce antibody to MRBC-TNP when (a) LPS and macrophages from LPS-responsive C3HeB/FeJ mice or (b) tumor necrosis serum ([TNS] induced by LPS in responsive mice) are added. The mitotic response was not restored. The findings suggest that adjuvanticity and mitogenicity represent distinct pathways of B-cell activation by LPS, subject to different regulatory mechanisms.Entities:
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Year: 1977 PMID: 303685 PMCID: PMC2181908 DOI: 10.1084/jem.146.6.1640
Source DB: PubMed Journal: J Exp Med ISSN: 0022-1007 Impact factor: 14.307