I see someone has been editing the wiki page for c

I see someone has been editing the wiki page for ccr5 when I went to copy this, but I’ve always found where ccr5 was expressed interesting.

CCR5 is predominantly expressed on T cells, macrophages, dendritic cells, eosinophils, microglia and a subpopulation of either breast or prostate cancer cells.

https://www.frontiersin.org/articles/10.3389/...00011/full
Distinct Cytokine and Chemokine Profiles in Autism Spectrum Disorders

Most of these associations between concentrations of cytokines and chemokines and the cognitive and behavioral domains showed moderate to large effect sizes, and the strongest association was found between increased CCL5 and lower composite scores for inattention/hyperactivity.


For example, it will be of interest to investigate the functional role of CCL5 in individuals with ADHD and to examine further whether CCR5 blockers will improve attention in animal models of ASD.

https://www.ncbi.nlm.nih.gov/pubmed/19729478
Role of the macrophage inflammatory protein-1alpha/CC chemokine receptor 5 signaling pathway in the neuroinflammatory response and cognitive deficits induced by beta-amyloid peptide.

The hallmarks of Alzheimer's disease include the deposition of beta-amyloid (Abeta), neuroinflammation, and cognitive deficits. The accumulation of activated glial cells in cognitive-related areas is critical for these alterations, although little is known about the mechanisms driving this event. Herein we used macrophage inflammatory protein-1alpha (MIP-1alpha(-/-))- or CC-chemokine receptor 5 (CCR5(-/-))-deficient mice to address the role played by chemokines in molecular and behavioral alterations induced by Abeta(1-40). Abeta(1-40) induced a time-dependent increase of MIP-1alpha mRNA followed by accumulation of activated glial cells in the hippocampus of wild-type mice. MIP-1alpha(-/-) and CCR5(-/-) mice displayed reduced astrocytosis and microgliosis in the hippocampus after Abeta(1-40) administration that was associated with decreased expression of cyclooxygenase-2 and inducible nitric oxide synthase, as well as reduced activation of nuclear factor-kappaB, activator protein-1 and cyclic AMP response element-binding protein. Furthermore, MIP-1alpha(-/-) and CCR5(-/-) macrophages showed impaired chemotaxis in vitro, although cytokine production in response to Abeta(1-40) was unaffected. Notably, the cognitive deficits and synaptic dysfunction induced by Abeta(1-40) were also attenuated in MIP-1alpha(-/-) and CCR5(-/-) mice. Collectively, these results indicate that the MIP-1alpha/CCR5 signaling pathway is critical for the accumulation of activated glial cells in the hippocampus and, therefore, for the inflammation and cognitive failure induced by Abeta(1-40). Our data suggest MIP-1alpha and CCR5 as potential therapeutic targets for Alzheimer's disease treatment.