Abstract：
:The CXC chemokine receptor CXCR4 was the first molecule identified as a coreceptor working in conjunction with CD4 to mediate cellular entry for the human immunodeficiency virus (HIV-1). Since that original discovery, 11 other seven-mtransmembrane domain molecules, many of which are chemokine receptors, have been shown to facilitate HIV entry into cells. These include CCR5, CCR3, CCR2, CCR1, CCR8, CX3CR1, STRL33 (BONZO), GPR15 (BOB), GPR1, US28, and APJ. In studies done by this and other labs, CCR3, CCR5, and CXCR4 have been identified in CNS microglia and several laboratories, including ours, have shown that CXCR4 is expressed in neurons. Neuronal expression of CCR2, CCR3, and CCR5 has been less consistent. We performed a semiquantitative immunohistochemical analysis of the expression of CCR2, CCR3, CCR5, and CXCR4 in 23 regions of the brain and in two sections of the spinal cord. Hippocampal neurons were positive for CCR2, CCR3, and CXCR4, but not for CCR5. In other regions of the brain, neurons, and glial cells reacted with anti-CCR2, anti-CCR3, and anti-CXCR4 antibodies, whereas only glial cells (primarily microglia) were positive for CCR5. The areas of highest expression, however, seem to be subcortical regions and the limbic system. The limbic system plays a key role in memory, and the presence of CXCR4-which can bind the viral envelope protein gp120-min a subset of neurons from this system may play a role in the development of HIV-related dementia.
journal_name
Exp Mol Patholjournal_title
Experimental and molecular pathologyauthors
van der Meer P,Ulrich AM,Gonźalez-Scarano F,Lavi Edoi
10.1006/exmp.2000.2336keywords:
subject
Has Abstractpub_date
2000-12-01 00:00:00pages
192-201issue
3eissn
0014-4800issn
1096-0945pii
S0014-4800(00)92336-0journal_volume
69pub_type
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