CCL3 Protein
Introduction <table class="infobox infobox-protein">
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CCL3 Protein
Introduction <table class="infobox infobox-protein">
Ccl3 Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Overview CCL3 (Chemokine C-C Motif Ligand 3), also known as MIP-1α (Macrophage Inflammatory Protein-1 alpha), is a CC chemokine that plays critical roles in inflammation and immune cell recruitment. It is a key mediator of neuroinflammation in neurodegenerative diseases. [@zhu2019]
Structure
Signal peptide : 1-23 aa (secretory pathway)Mature protein : 24-99 aaCys-Cys motif : Positions 34-35 (CC chemokine signature)Heparin-binding domain : C-terminal regionMolecular Function CCL3 binds to CCR1, CCR4, and CCR5 receptors to recruit immune cells to sites of inflammation.
Receptor Interactions:
Role in Neurodegeneration
Alzheimer's Disease
CCL3 protein elevated in AD brain ([hippocampus](/brain-regions/hippocampus), cortex)
Increased in CSF of AD patients
Promotes microglial activation around amyloid plaques
May have dual role: pro-inflammatory and [Aβ](/proteins/amyloid-beta) clearance
Contributes to chronic neuroinflammation
Parkinson's Disease
CCL3 highly expressed in PD substantia nigra
Attracts [microglia](/entities/microglia) to dopaminergic [neurons](/entities/neurons)
Promotes neuroinflammation and neuron loss
CSF levels correlate with disease progression
ALS
CCL3 dramatically increased in ALS spinal cord
Attracts activated [microglia](/cell-types/microglia-neuroinflammation) to motor neurons
Promotes inflammatory cascade
CCL3 knockout mice show reduced motor neuron loss
Therapeutic target for ALS
Multiple Sclerosis
CCL3 recruits immune cells across [blood-brain barrier](/entities/blood-brain-barrier)
Promotes demyelination
CCR1/CCR5 antagonists in clinical trials for MS
Therapeutic Targeting
Biomarker Potential
CCL3 levels in CSF: biomarker for neuroinflammation
Blood CCL3: potential peripheral marker
Interactions
CCR1 : Primary receptor on monocytes/macrophagesCCR5 : Co-receptor for HIV, important in T cell recruitmentCCR4 : Th2 cell recruitmentProteoglycans : Heparin-binding for gradient formationOther chemokines : Can form heterodimersAnimal Models
Ccl3 knockout mice: Reduced inflammation in models
Transgenic overexpression: Neuroinflammation and neurodegeneration
See Also
[CCL3 Gene](/proteins/ccl3-protein)
[Neuroinflammation Pathway](/mechanisms/neuroinflammation-pathway)
[CCL4 Protein](/proteins/ccl4-protein)
[CCR5 Protein](/proteins/ccr5-protein)
[Alzheimer's Disease](/diseases/alzheimers-disease)
[Parkinson's Disease](/diseases/parkinsons-disease)
Background The study of Ccl3 Protein has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
External Links
[PubMed](https://pubmed.ncbi.nlm.nih.gov/) - Biomedical literature
[Alzheimer's Disease Neuroimaging Initiative](https://adni.loni.usc.edu/) - Research data
[Allen Brain Atlas](https://brain-map.org/) - Brain gene expression data
References
McQuibban GA, et al, (2020) (2020)
Zhu M, et al, (2019) (2019)
Chandra S, et al, (2021) (2021)
Henkel JS, et al, (2020) (2020)
Boven LA, et al, (2018) (2018) Show full description