Human serum amyloid P component binds to peripheral blood monocytes.

Abstract:

:The binding of human serum amyloid P component (SAP) to blood cells and monocyte-derived dendritic cells was investigated by flow cytometry. Monocytes bound biotinylated SAP with avidity in a dose-dependent and saturable manner. By contrast, the binding of SAP to monocyte-derived dendritic cells was weak. No binding to erythrocytes, NK cells, T lymphocytes or B lymphocytes could be detected. The SAP-monocyte interaction was calcium-independent and readily inhibited by C1q. SAP was nonmitogenic for human mononuclear cells and had no apparent influence on lymphocyte proliferation induced by mitogenic lectins. We speculate that binding of SAP by monocytes could be of physiological relevance at extravascular sites by influencing complement regulation.

journal_name

Scand J Immunol

authors

Macdonald SL,Kilpatrick DC

doi

10.1111/j.1365-3083.2006.01774.x

subject

Has Abstract

pub_date

2006-07-01 00:00:00

pages

48-52

issue

1

eissn

0300-9475

issn

1365-3083

pii

SJI1774

journal_volume

64

pub_type

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