| 1996 |
CCL11 (eotaxin) binds with high affinity and specificity to the chemokine receptor CCR3 (CKR-3), which is selectively expressed on eosinophils. Cells transfected with CCR3 cDNA bound radiolabeled eotaxin specifically and migrated in transwell chemotaxis assays to eotaxin, RANTES, and MCP-3, but not other chemokines. |
Radioligand binding assays, transwell chemotaxis assays, cDNA transfection, Northern blot |
The Journal of experimental medicine |
High |
8676064
|
| 1997 |
CCR3, the eotaxin receptor, is selectively expressed by human Th2 (but not Th1) lymphocytes in addition to eosinophils and basophils. Eotaxin stimulated increases in intracellular calcium and chemotaxis of CCR3+ T cells. |
Flow cytometry, intracellular calcium flux assay, chemotaxis assay, antibody-based cell isolation |
Science (New York, N.Y.) |
High |
9302298
|
| 1997 |
CCR3 is functionally expressed by Th2-type T lymphocytes (not Th1) and mediates CCL11-induced calcium flux and migration; CCR3+ T lymphocytes co-localize with eosinophils at sites of allergic inflammation in vivo. |
cDNA library cloning, flow cytometry, calcium flux assay, chemotaxis assay, immunostaining of tissue sections |
Current biology : CB |
High |
9480044
|
| 1996 |
Mouse CCR3 (renamed from MIP-1α receptor-like 2) is a functional eotaxin receptor: human and mouse eotaxin, but not other chemokines, induced transient increases in [Ca2+]i in HEK293 cells expressing the receptor; CCR3 RNA was abundant in primary eosinophils. |
Calcium flux assay in transfected cells, RT-PCR, radioligand binding |
Biochemical and biophysical research communications |
High |
8687456
|
| 1997 |
CCL11 expression in lung epithelial cells is induced by TNF-α and IL-1β at the mRNA and protein level, and this induction is inhibited by the glucocorticoid dexamethasone. Cytokine-induced mRNA increases correlated with increased protein production and secretion. |
RT-PCR, ELISA, Northern blot, pharmacological inhibition with dexamethasone |
The Journal of clinical investigation |
High |
9120022
|
| 1999 |
CCL11 (eotaxin) induces phosphorylation and activation of p42/p44 MAP kinases (ERK1/2) in eosinophils; blockade of MAPK activation by PD98059 dramatically decreases CCL11-induced eosinophil rolling in vivo and chemotaxis in vitro, consistent with regulation of actin polymerization and rearrangement. |
Phosphorylation assays, MAPK inhibitor (PD98059), in vivo rolling assay, in vitro chemotaxis, actin polymerization assay |
Journal of immunology (Baltimore, Md. : 1950) |
High |
10415066
|
| 1999 |
Human airway smooth muscle cells constitutively express CCL11, and expression is enhanced by TNF-α and IL-1β. CCL11 secreted from ASM cells acts as a chemoattractant for eosinophils; anti-CCL11 and anti-RANTES antibodies together inhibit >70% of eosinophil chemotaxis toward ASM supernatants. |
RT-PCR, immunocytochemistry, ELISA, chemotaxis assay, antibody neutralization |
American journal of respiratory and critical care medicine |
High |
10351942
|
| 2001 |
CCL11 (eotaxin) is a natural antagonist for CCR2 and an agonist for CCR5 in addition to its primary agonist activity at CCR3. Eotaxin displaces 125I-MCP-1 from monocytes, inhibits MCP-1-induced chemotaxis and enzyme release via CCR2, and induces CCR5 internalization but not CCR2 internalization. |
Radiolabeled ligand binding assays, calcium flux assay, chemotaxis assay, enzyme release assay, receptor internalization assay in monocytes and transfected cells |
Blood |
High |
11264152
|
| 2001 |
CCL11 (eotaxin) is a partial agonist of CCR2b: at 1 µM it induces chemotaxis of CCR2b transfectants and THP-1 cells (blocked by anti-CCR2 but not anti-CCR3), while sub-stimulatory concentrations inhibit MCP-1-induced chemotaxis and calcium flux through CCR2b. Eotaxin binds CCR2b with Kd = 7.50 nM vs 1.68 nM at CCR3. |
Chemotaxis assay, intracellular calcium flux, radioligand binding on CCR2b and CCR3 transfectants, antibody blocking |
The Journal of biological chemistry |
High |
11559700
|
| 2001 |
IL-13 upregulates CCL11 expression in airway epithelial cells (BEAS-2B) via a STAT6-dependent mechanism: IL-13 activates STAT6 nuclear binding to the eotaxin promoter, and mutation of the STAT6 binding site or use of a dominant-negative STAT6 abolishes IL-13-induced promoter activation and CCL11 protein secretion. |
RT-PCR, ELISA, promoter-luciferase reporter transfection, EMSA, site-directed mutagenesis, dominant-negative STAT6 cotransfection |
American journal of respiratory cell and molecular biology |
High |
11415942
|
| 2001 |
TNF-α and IL-4/IL-13 induce CCL11 (eotaxin-1) expression in fibroblasts through a STAT6-mediated transcriptional pathway. TNF-α inducibility requires STAT6 (shown by STAT6-defective HEK293 cells), involves a composite STAT6/NF-κB element, and a dominant-negative STAT6 inhibits TNF-α-induced CCL11 secretion in primary fibroblasts. |
Promoter-luciferase reporter assay, EMSA, cotransfection with STAT6 expression vectors, dominant-negative STAT6, ELISA |
Journal of immunology (Baltimore, Md. : 1950) |
High |
11254707
|
| 2000 |
IL-1β induces CCL11 (eotaxin) gene transcription in airway epithelial cells via an NF-κB site located 46 bp upstream from the transcriptional start site. Site-directed mutagenesis showed this NF-κB site is necessary and sufficient for IL-1β induction; p50 and p65 bind this site; and NF-κB inhibitors block IL-1β-induced CCL11 mRNA expression. |
Nuclear run-on transcription assay, promoter-luciferase reporter, site-directed mutagenesis, EMSA, supershift assay, NF-κB inhibitors, p65 overexpression |
American journal of physiology. Lung cellular and molecular physiology |
High |
11076795
|
| 2005 |
TNF-α-induced CCL11 gene transcription in airway smooth muscle cells is mediated mainly by NF-κB (p65/p50), which induces selective histone H4 acetylation on lysines 5 and 12 at the CCL11 promoter. β2-Agonists and glucocorticoids inhibit CCL11 by blocking TNF-α-induced histone H4 acetylation and p65 binding to the promoter without affecting NF-κB nuclear translocation or in vitro DNA binding. |
Luciferase reporter assay, Western blot, EMSA, electrophoretic mobility supershift assay, chromatin immunoprecipitation (ChIP) |
Journal of immunology (Baltimore, Md. : 1950) |
High |
15972682
|
| 2007 |
CCL11 (eotaxin) binds selectively to immobilized heparin with high affinity (Kd = 1.23 × 10⁻⁸ M), but not to heparan sulfate or other GAGs. This interaction protects CCL11 from proteolysis by plasmin and indirectly by cathepsin G and elastase, and co-administration of CCL11 and heparin significantly enhances eosinophil recruitment in a mouse air-pouch model in vivo. |
Heparin affinity binding assay (Kd determination), protease protection assay, mouse air-pouch model in vivo, in vitro chemotaxis assay |
The Journal of biological chemistry |
High |
17384413
|
| 2014 |
CCL11 undergoes bidirectional transport across the blood-brain barrier (BBB). The slow influx phase is explained by binding to cellular components in blood; the rapid uptake phase involves direct interactions with the BBB. A slow but saturable transport system exists from brain to blood. CCR3 did not facilitate CCL11 transport across the BBB. Transport does not disrupt BBB integrity. |
In vivo pharmacokinetic transport assay (multiple time regression), biphasic kinetics analysis, regional brain dissection, BBB disruption assay, pharmacological CCR3 blockade |
The Journal of pharmacology and experimental therapeutics |
High |
24706984
|
| 2014 |
The structural basis of CCL11/eotaxin-1 recognition of CCR3 was determined: sulfotyrosine residues at positions in the CCR3 N-terminus (residues 8-23) form hydrophobic, salt bridge, and cation-π interactions with residues conserved in CC chemokines. Intact CCR3 is sulfated, and sulfation enhances receptor activity. The orientation of CCL11 relative to the receptor N-terminus differs from that of CXC chemokines. |
NMR structure determination, peptide binding assay with chemical shift mapping, receptor sulfation validation, functional receptor activity assay |
Structure (London, England : 1993) |
High |
25450766
|
| 2004 |
CCL11 induces CCR3-dependent smooth muscle cell (SMC) chemotaxis. CCR3 mRNA and protein are expressed in mouse aortic SMCs; CCL11-induced SMC migration in Boyden chamber and scrape-wound assay is blocked by anti-CCR3 (but not anti-CCR2) antibody. CCR3 and CCL11 are upregulated in medial and intimal SMCs after arterial injury. |
RT-PCR, Western blot, flow cytometry, Boyden chamber chemotaxis, scrape-wound assay, immunohistochemistry, antibody neutralization |
Arteriosclerosis, thrombosis, and vascular biology |
High |
15130922
|
| 2005 |
CCL11 (eotaxin/CCL11) exerts direct profibrogenic effects on human lung fibroblasts via CCR3, which is constitutively expressed on these cells. CCL11 increases fibroblast proliferation, MMP-2 activity, and collagen synthesis, but not TGF-β1 release or myofibroblast differentiation. CCL11-enhanced fibroblast migration is completely inhibited by anti-CCR3 neutralizing antibodies. |
Flow cytometry, RT-PCR, Northern blot, proliferation assay (tritiated thymidine), chemotaxis (Boyden chamber), collagen synthesis (tritiated proline), gelatin zymography, ELISA, antibody neutralization |
The Journal of allergy and clinical immunology |
High |
16387592
|
| 2004 |
IL-9 induces CCL11/eotaxin-1 expression in human airway smooth muscle cells through STAT3 signaling (not STAT6 or STAT5). IL-9 induces STAT3 phosphorylation and STAT3 binding to the CCL11 promoter in vivo; dominant-negative STAT3β abolishes IL-9-induced CCL11 promoter activity; STAT3 siRNA reduces CCL11 mRNA. |
RT-PCR, ELISA, promoter-luciferase reporter, ChIP assay (STAT3 binding to promoter), dominant-negative constructs, siRNA knockdown |
Journal of immunology (Baltimore, Md. : 1950) / PloS one |
High |
15294996 20169197
|
| 2012 |
CCL11 stimulates piecemeal degranulation of eosinophil-associated RNases (EARs) from mouse eosinophils in vitro (EC50 5 nM via CCR3). Cell-free eosinophil granules express functional CCR3 receptors and secrete EAR and eosinophil peroxidase in response to CCL11. |
RNase enzymatic activity assay, electron microscopy (ultrastructure), in vitro eosinophil stimulation, mouse model of allergic airway inflammation |
FASEB journal |
High |
22294786
|
| 2012 |
STAT6 binding to the eotaxin-3 promoter is blocked by omeprazole in EoE esophageal cells, explaining PPI-mediated suppression of IL-4-stimulated CCL11 (eotaxin) family production. Omeprazole had no effect on STAT6 phosphorylation or nuclear translocation but blocked binding of STAT6, RNA polymerase II, and trimethylated H3K4 to the eotaxin-3 promoter. |
ChIP assay (STAT6, RNA Pol II, H3K4me3), Western blot (STAT6 phosphorylation, nuclear translocation), ELISA, RT-PCR, promoter reporter construct |
PloS one |
High |
23185525
|
| 2011 |
CCL11 promotes survival of anaplastic large cell lymphoma (ALCL) cells via autocrine CCR3 signaling and ERK1/2 phosphorylation, inducing expression of anti-apoptotic proteins Bcl-xL and survivin. ERK1/2 inhibition completely blocked CCL11-mediated cell survival and tumor proliferation. |
Cell survival assay, proliferation assay, ERK1/2 phosphorylation (Western blot), ERK inhibitor, in vivo tumor growth, immunostaining |
Cancer research |
High |
21406396
|
| 2012 |
TGF-β1 synergizes with IL-13 to increase CCL11 expression in airway fibroblasts by augmenting STAT6 phosphorylation, nuclear translocation, and binding to the CCL11 promoter. TGF-β1 activates the MEK/ERK pathway to reduce IL-13Rα2 (the decoy receptor), thereby overcoming IL-13's autoregulatory feedback and enhancing STAT6-dependent CCL11 transcription. |
Nuclear run-on transcription assay, mRNA stability assay, STAT6 siRNA, promoter ChIP, Western blot (STAT6 phosphorylation and translocation), MEK/ERK inhibitor, IL-13Rα2 expression analysis |
Journal of immunology (Baltimore, Md. : 1950) |
High |
22573806
|
| 2017 |
FGF21 acts on adipocytes in an autocrine manner to promote CCL11 expression and secretion via ERK1/2 activation, which drives eosinophil recruitment into subcutaneous white adipose tissue, leading to M2 macrophage accumulation and beige adipocyte biogenesis. CCL11 neutralization blocks FGF21-induced type 2 immune responses and beiging. |
Conditional knockout mice (adipose-specific FGF21 and β-Klotho ablation), CCL11 neutralization, ERK1/2 activation assay, eosinophil/macrophage quantification, adipocyte differentiation assays, CCL11 replenishment rescue |
Cell metabolism |
High |
28844880
|
| 2009 |
CCL11 signaling in ovarian carcinoma cells (via CCR2, CCR3, CCR5) stimulates proliferation and migration/invasion and activates ERK1/2, MEK1, and STAT3 phosphorylation. Neutralizing antibodies against CCR2, CCR3, and CCR5 inhibit CCL11-stimulated growth and invasion. |
Proliferation assay, migration/invasion assay, antibody neutralization, phosphoprotein analysis (ERK1/2, MEK1, STAT3), ELISA |
Clinical cancer research |
Medium |
19351767
|
| 2003 |
OSM (oncostatin M) induces CCL11 production in fibroblasts via partial dependence on ERK1/2 and p38 MAPK signaling (not STAT3 alone); pharmacological inhibitors of ERK (PD98059) and p38 (SB203580) partially reduce OSM-induced CCL11 production in NIH 3T3 cells. |
ELISA, RT-PCR, Western blot (STAT3, ERK, p38 phosphorylation), pharmacological inhibitors, adenoviral OSM overexpression in vivo |
Journal of immunology (Baltimore, Md. : 1950) |
Medium |
12496442
|
| 2001 |
Genetic epistasis in mice shows that eotaxin (CCL11) overexpression in intestinal enterocytes drives gastrointestinal eosinophilia via a β7 integrin-dependent mechanism; genetic rescue (eotaxin transgene in eotaxin-deficient mice) restores gastrointestinal eosinophil levels, while β7-integrin blockade prevents accumulation. |
Transgenic mice (enterocyte-specific eotaxin expression), eotaxin gene-targeted mice with transgenic rescue, eosinophil quantification, β7 integrin blockade |
The Journal of biological chemistry |
High |
11733500
|
| 2005 |
Genetic deletion of eotaxin-1 (CCL11) and eotaxin-2 together in mice (DKO) causes a marked decrease in pulmonary tissue eosinophilia in OVA-challenged asthma models, approaching the low levels seen in CCR3-deficient mice. Individual eotaxin-1 or eotaxin-2 deletion has modest effects, indicating synergistic and non-redundant roles in CCR3-mediated eosinophil recruitment. |
Targeted gene deletion (single and double KO), allergen-challenge asthma model, eosinophil quantification in BAL and tissue, CCR3-deficient mice comparison |
Journal of immunology (Baltimore, Md. : 1950) |
High |
16210640
|
| 2011 |
In airway smooth muscle cells, dimethylfumarate (DMF) inhibits NF-κB-dependent CCL11 (eotaxin) secretion by inducing IκBα glutathionylation (IκBα-SSG), which prevents IκBα degradation, NF-κB p65 nuclear entry, and NF-κB/DNA binding; DMF also inhibits phosphorylation of histone H3 via MSK-1 inhibition. These effects are reversed by glutathione-OEt. |
ELISA, EMSA, immunofluorescence, co-immunoprecipitation, immunoblotting (IκBα-SSG, p65, p-H3) |
The European respiratory journal |
Medium |
21719482
|
| 2003 |
Eotaxin (CCL11) and IL-5 activate overlapping signal transduction pathways for eosinophil shape change, including MAPK, p38 MAPK, intracellular Ca2+, and PKA, but CCL11-induced shape change does not require PKC, which is required for IL-5-induced shape change and associated ERK1/2 activation. |
Gated autofluorescence/forward-scatter shape change assay, pharmacological inhibitors (MAPK, p38, Ca2+ depletion, PKA, PTK, PKC), ERK1/2 phosphorylation assay |
Immunology |
Medium |
12562334
|
| 2024 |
In pancreatic cancer, ATX-LPA signaling suppresses CCL11 expression via inhibition of the AP-1 transcription factor c-Jun; ATX inhibition de-represses CCL11, increasing eosinophil accumulation in the tumor microenvironment. CCL11 neutralization reversed eosinophil accumulation caused by ATX inhibition, placing CCL11 downstream of ATX-LPA-c-Jun in this autocrine feedback loop. |
Genetic ATX inhibition (knockout), pharmacological ATX inhibition, CCL11 neutralization, eosinophil quantification, c-Jun activity assay, gene expression analysis, human PDAC specimen analysis |
Nature cancer |
High |
38195933
|
| 2011 |
CCL11 induces MMP-3 mRNA expression in human chondrocytes via ERK and p38 kinase pathways (inhibited by ERK and p38 inhibitors), while MMP-3 protein secretion is regulated by PLC-PKC cascade and JNK/MAP kinase pathways. cAMP/PKA pathway antagonizes CCL11-induced MMP-3 expression, and these effects are mediated through G protein-coupled CCL11 receptor activity. |
RT-PCR, pharmacological inhibitors (ERK, p38, PKA, PKC, JNK, PLC), ELISA, Western blot |
Journal of biomedical science |
Medium |
22114952
|
| 2022 |
Brg1 (a chromatin remodeling protein) directly binds to the proximal CCL11 promoter and activates its transcription by interacting with NF-κB/RelA. NF-κB knockdown or inhibition disrupts Brg1 recruitment to the CCL11 promoter and blocks CCL11 induction in hepatocytes during liver regeneration. |
ChIP assay (Brg1 promoter binding), NF-κB knockdown, pharmaceutical NF-κB inhibition, liver-specific Brg1 knockout, adenoviral CCL11 overexpression, quantitative PCR, ELISA |
Cell death & disease |
High |
35614068
|
| 2023 |
CCL11 promotes hepatic stellate cell (HSC) activation and liver fibrosis: CCL11 levels are elevated in HSCs from fibrotic mice and induced by TGF-β and PDGF. Zinc finger factor 281 binds the CCL11 promoter and mediates its trans-activation. CCL11 regulates HSC activation by stimulating Jagged 1 transcription; CCL11-/- or HSC-specific CCL11 knockdown mitigates fibrogenesis, and CCR3 antagonism or anti-CCL11 neutralizing antibodies ameliorate liver fibrosis. |
ChIP (ZNF281 promoter binding), RNA sequencing, CCL11-/- global KO, HSC-specific conditional knockdown, CCR3 antagonist, anti-CCL11 neutralizing antibodies, Jagged 1 reconstitution, ELISA, qPCR |
Hepatology (Baltimore, Md.) |
High |
36651177
|
| 2023 |
CCL11 promotes reactive oxygen species (ROS) production and DNA damage response (DDR) activation (p-TP53, γH2AX) in lung fibroblasts, leading to cellular senescence and increased secretion of senescence-associated secretory phenotype (SASP) cytokines IL-6 and IL-8. |
ROS assay, DNA damage response markers (Western blot: p-TP53, γH2AX), senescence assay, SASP cytokine ELISA, in silico target analysis (PseudoCell), gene expression in asthmatic airway epithelial cells |
Frontiers in immunology |
Medium |
37860000
|
| 2017 |
CCL11 promotes migration and proliferation of mouse neural progenitor cells (NPCs) in vitro; these effects are partly inhibited by the CCR3 antagonist SB297006. In neonatal hypoxic-ischemic injury, NPCs migrate toward injured areas where CC chemokines including CCL11 are markedly elevated. |
Migration assay, proliferation assay, CCR3 antagonist (SB297006), neonatal mouse hypoxic-ischemic brain injury model, chemokine quantification |
Stem cell research & therapy |
Medium |
28173860
|
| 2017 |
In human umbilical vein endothelial cells (HUVECs), CCL11-CCR3 interaction activates the PI3K/Akt signaling pathway (not ERK1/2), promoting endothelial cell migration and angiogenesis. CCR3 siRNA knockdown reduces PI3K phosphorylation, and PI3K inhibitors abolish CCL11-induced Akt phosphorylation. |
Scratch wound assay, MTS proliferation assay, rat aortic ring sprouting assay, siRNA knockdown of CCR3, PI3K inhibitors, Western blot (Akt, ERK1/2 phosphorylation) |
Journal of receptor and signal transduction research |
Medium |
28279120
|
| 2013 |
Myeloid cell-specific NF-κB/RelA (p65) regulates CCL11 expression and intestinal eosinophilic inflammation: DSS-induced CCL11 expression, eosinophilic inflammation, and histopathology are attenuated in RelA/p65(Δmye) mice. Calprotectin (S100a8/S100a9) induces CCL11 production from macrophages via a p65-dependent mechanism. |
Conditional myeloid-specific p65 knockout, DSS colitis model, STAT6-/- comparison, LPS stimulation of bone marrow-derived macrophages, gene array analysis, immunofluorescence, flow cytometry |
Journal of immunology (Baltimore, Md. : 1950) |
High |
23562811
|
| 2021 |
CCL11 promotes CCR3-dependent self-amplifying expression in RA fibroblast-like synoviocytes (FLS): CCL11 induces its own mRNA and CCR3 mRNA expression; TNF-α induces CCL11/CCR3 expression; CCR3 antagonist reduces TNF-α-induced CCL11 secretion; CCL11 induces migration of RA FLS and monocytes; CCL11 siRNA reduces FLS migration. |
ELISA, immunofluorescence, quantitative PCR, CCR3 antagonist, CCL11 siRNA, migration assay |
Scientific reports |
Medium |
33846499
|
| 2021 |
CCL11 exacerbates DSS-induced colitis and colitis-associated tumorigenesis in mice: Ccl11-/- mice show decreased colon tumor number and burden, histologic injury, and eosinophil infiltration versus WT. Bone marrow chimera experiments showed that both hematopoietic- and epithelial cell-derived CCL11 are important for tumorigenesis. |
Ccl11-/- mice, DSS colitis model, AOM-DSS carcinogenesis model, bone marrow chimera, histology, eosinophil quantification |
Oncogene |
High |
34625710
|
| 2021 |
Circulating CCL11 (eotaxin-1) mediates age-related cognitive decline: neutralizing anti-CCL11 antibody in standard-housed aged mice produces EE-like improvements in spatial memory, hippocampal neurogenesis, and microglial activation; conversely, interfering with CCL11 reduction during environmental enrichment ablates its beneficial effects. |
Anti-CCL11 neutralizing antibody treatment, environmental enrichment, hippocampal neurogenesis quantification, spatial memory testing, microglial activation assessment, ribosomal S6 activation |
Brain, behavior, and immunity |
High |
34418501
|
| 2014 |
Elevated CCL11 levels in the tumor microenvironment suppress dendritic cell differentiation/maturation, skewing toward a Th2 immune response and impairing CD8+ T cell-mediated tumor lysis. Myeloid IKKβ loss in macrophages reduces MHC class II expression and enhances CCL11 production, promoting melanoma growth. |
Myeloid-specific IKKβ knockout mice, allograft tumor models, macrophage depletion, CD8+ T cell depletion, serum/tissue CCL11 measurement, flow cytometry (MHC II, DC maturation) |
Cancer research |
Medium |
25336190
|