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Mitosis and apoptosis of microglia in vivo induced by an anti-CR3 antibody which crosses the blood-brain barrier

Mitosis and apoptosis of microglia in vivo induced by an anti-CR3 antibody which crosses the blood-brain barrier
Mitosis and apoptosis of microglia in vivo induced by an anti-CR3 antibody which crosses the blood-brain barrier

Microglia, the resident tissue macrophages of the central nervous system13, have a highly differentiated morphology and do not express many of the antigens typically associated with other tissue macrophages.13,18. Activation of microglia is associated with a change in morphology and an increase in their repertoire of antigen expression. Microglia become activated in many neuropathological conditions including chronic neurodegenerative diseases and human immunodeficiency virus neuropathology,5,17 yet little is known of the mechanisms involved. Here we demonstrate for the first time that microglia can be activated and induced to divide and/or undergo apoptosis via a β2integrin (complement receptor type 3, CR3, Mac-1 or CD11b CD18) using an anti-CR3 monoclonal antibody (McAb5C6).15 This antibody, which has been shown to block myelomonocytic recruitment during central nervous system inflammation,1 is unique in that it can cross the intact blood-brain barrier to activate microglia. Since CR3 not only binds the iC3b component of the alternative complement cascade but also denatured proteins4 this suggests a potential route for microglia activation in neuropathological conditions.

0306-4522
529-533
Reid, D.M.
2c496943-c5cd-4670-866b-481d0a59615b
Perry, V.H
8f29d36a-8e1f-4082-8700-09483bbaeae4
Andersson, P.-B.
64c40047-7670-47a8-8426-b527113e4d04
Gordon, S.
df664ae8-6319-4b1a-8f16-49f4a5fe760f
Reid, D.M.
2c496943-c5cd-4670-866b-481d0a59615b
Perry, V.H
8f29d36a-8e1f-4082-8700-09483bbaeae4
Andersson, P.-B.
64c40047-7670-47a8-8426-b527113e4d04
Gordon, S.
df664ae8-6319-4b1a-8f16-49f4a5fe760f

Reid, D.M., Perry, V.H, Andersson, P.-B. and Gordon, S. (1993) Mitosis and apoptosis of microglia in vivo induced by an anti-CR3 antibody which crosses the blood-brain barrier. Neuroscience, 56 (3), 529-533. (doi:10.1016/0306-4522(93)90353-H).

Record type: Article

Abstract

Microglia, the resident tissue macrophages of the central nervous system13, have a highly differentiated morphology and do not express many of the antigens typically associated with other tissue macrophages.13,18. Activation of microglia is associated with a change in morphology and an increase in their repertoire of antigen expression. Microglia become activated in many neuropathological conditions including chronic neurodegenerative diseases and human immunodeficiency virus neuropathology,5,17 yet little is known of the mechanisms involved. Here we demonstrate for the first time that microglia can be activated and induced to divide and/or undergo apoptosis via a β2integrin (complement receptor type 3, CR3, Mac-1 or CD11b CD18) using an anti-CR3 monoclonal antibody (McAb5C6).15 This antibody, which has been shown to block myelomonocytic recruitment during central nervous system inflammation,1 is unique in that it can cross the intact blood-brain barrier to activate microglia. Since CR3 not only binds the iC3b component of the alternative complement cascade but also denatured proteins4 this suggests a potential route for microglia activation in neuropathological conditions.

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More information

Accepted/In Press date: 5 July 1993
Published date: October 1993

Identifiers

Local EPrints ID: 489570
URI: http://eprints.soton.ac.uk/id/eprint/489570
ISSN: 0306-4522
PURE UUID: e4fb961e-d07e-4180-85a0-436e4aeb1ed6

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Date deposited: 29 Apr 2024 16:30
Last modified: 05 Jun 2024 17:58

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Contributors

Author: D.M. Reid
Author: V.H Perry
Author: P.-B. Andersson
Author: S. Gordon

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