Premium
Leukocyte chemotactic factor, a natural ligand to CD4, is expressed by lymphocytes and microglial cells of the MS plaque
Author(s) -
Schluesener H.J.,
Seid K.,
Kretzschmar J.,
Meyermann R.
Publication year - 1996
Publication title -
journal of neuroscience research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.72
H-Index - 160
eISSN - 1097-4547
pISSN - 0360-4012
DOI - 10.1002/(sici)1097-4547(19960615)44:6<606::aid-jnr11>3.0.co;2-w
Subject(s) - monoclonal antibody , biology , autocrine signalling , cytokine , proinflammatory cytokine , cd8 , microbiology and biotechnology , paracrine signalling , lymphocyte , immunosurveillance , immunology , immune system , inflammation , antibody , cell culture , receptor , biochemistry , genetics
The leukocyte chemotactic factor (LCF) is a proinflammatory cytokine and natural soluble ligand to the human CD4 molecule. LCF is produced by CD4 + and CD8 + T lymphocytes and is considered essential to the influx of CD4 + T lymphocytes and macrophages into an inflammatory lesion. In order to investigate the role of LCF in the multiple sclerosis (MS) lesion, we have used a synthetic gene to express LCF in E. coli and have produced monoclonal antibodies against LCF. Monoclonal antibodies are suited to demonstrate LCF in ELISAs, Western blots and paraffin‐embedded tissue sections. In the MS lesion, immunopositive lymphocytes and microglial cells, notably, have been found. This is the first demonstration that LCF is present in MS lesions. Immunostaining of microglial cells is noteworthy, as these cells are strategically placed regulatory elements of CNS immunosurveillance and like other cells of the monocytic lineage express CD4 molecules. Thus, LCF might be a paracrine factor regulating T‐lymphocyte chemoattraction and an autocrine molecule regulating microglial cell immune reactivity. © 1996 Wiley‐Liss, Inc.