| 1997 |
CCL24 (eotaxin-2) signals exclusively through CCR3 to induce chemotaxis of eosinophils and basophils, and stimulate histamine and leukotriene C4 release from IL-3-primed basophils; complete cross-desensitization with eotaxin and MCP-4 confirmed shared CCR3 usage, and an anti-CCR3 monoclonal antibody abrogated all functional responses. |
Calcium mobilization assay, chemotaxis assay, mediator release assay, receptor desensitization, anti-CCR3 blocking antibody, in vivo intradermal injection in rhesus monkey |
The Journal of experimental medicine |
High |
9182688
|
| 1998 |
CCL24 activates eosinophil actin polymerization, chemotaxis, and reactive oxygen species (respiratory burst) release via CCR3 and pertussis toxin-sensitive Gi proteins; CCR3-blocking antibody inhibited Ca2+ mobilization and ROS release, demonstrating Gi protein-coupled CCR3 signaling. |
Actin polymerization (NBD-phallacidin/flow cytometry), ROS assay, pertussis toxin inhibition, anti-CCR3 monoclonal antibody (7B11) blocking, Ca2+ mobilization |
European journal of immunology |
High |
9692884
|
| 2000 |
NMR solution structure of CCL24 was determined: a helical turn (residues 17-20), 3-stranded antiparallel beta-sheet, and C-terminal alpha-helix, with two conserved disulfide bonds tethering the N-terminus/N-loop to the beta-sheet. The N-terminal region of CCR3 binds into an extended groove at the interface between the N-loop and the beta2-beta3 hairpin of CCL24. |
Heteronuclear and triple resonance NMR; hybrid distance geometry-simulated annealing structure calculation from 854 NOE restraints; receptor N-terminal peptide binding by NMR chemical shift mapping |
Biochemistry |
High |
10913244
|
| 2000 |
The amino terminus of CCL24 (MPIF-2) is critical for eosinophil activity: deletion of the first two amino acids does not markedly alter activity, but subsequent truncations abolish Ca2+ mobilization, chemotaxis, and receptor binding on eosinophils. One N-terminal mutant (P30-R99) was converted from agonist to antagonist of CCR3 on eosinophils while retaining ability to inhibit myeloid progenitor colony formation, demonstrating separable structure-activity relationships. |
N-terminal deletion mutagenesis, calcium flux assay, chemotaxis assay, receptor binding, myeloid progenitor colony inhibition assay |
Cytokine |
High |
11237428
|
| 2000 |
Murine CCL24 (eotaxin-2) mRNA expression is highest constitutively in jejunum and spleen, is induced by allergen challenge and IL-4 overexpression in lung, and the IL-4-induced expression is STAT6-dependent (abrogated in STAT6-deficient mice). Recombinant murine CCL24 induced dose-dependent chemotaxis of murine eosinophils but not macrophages or neutrophils. |
Northern blot, mouse genetic knockouts (STAT6-/-), IL-4 transgenic mice, recombinant protein chemotaxis assay |
Journal of immunology |
High |
11067944
|
| 2002 |
CCL24 acts via MAP kinases (ERK1/2) downstream of CCR3 to shift eosinophil integrin usage: CCL24 co-immobilized with adhesion molecules decreased VCAM-1-mediated adhesion and increased ICAM-1-mediated adhesion. This was blocked by a CCR3-blocking mAb and by the MEK inhibitor PD98059. |
Parallel plate flow system (physiologic shear stress), adhesion molecule blocking mAbs, CCR3-blocking mAb, MEK/ERK inhibitor (PD98059), video microscopy |
American journal of respiratory cell and molecular biology |
High |
12034562
|
| 2002 |
Peripheral blood monocytes constitutively produce bioactive CCL24 protein; production is upregulated by IL-1beta, LPS, and zymosan but not by Th2 cytokines (IL-4, IL-13) or TNF-alpha. IL-4 suppresses LPS-induced CCL24 from monocytes. Upon differentiation into macrophages, constitutive CCL24 production is suppressed, but IL-4 (not LPS) upregulates CCL24 in macrophages, demonstrating cell-state-dependent regulation. |
ELISA for CCL24 protein, cytokine stimulation assays in primary monocytes and monocyte-derived macrophages, chemotaxis bioassay |
Journal of immunology |
High |
11823526
|
| 2002 |
CCL24 stimulates eosinophil degranulation (eosinophil peroxidase release) and superoxide anion generation via CCR3; anti-CCR3 antibody inhibited these effector functions. IL-5 cooperates with CCL24 to potentiate eosinophil degranulation. |
Eosinophil peroxidase degranulation assay, superoxide generation assay, anti-CCR3 blocking antibody, IL-5 priming, HL-60 eosinophilic cells |
Experimental biology and medicine |
Medium |
12192108
|
| 2003 |
CCL24-induced eosinophil degranulation is mediated through ERK1/2 (MEK1/2), p38 MAPK, and PI3K signaling downstream of CCR3; specific inhibitors (U0126, SB203580, LY294002) concentration-dependently reduced CCR3-mediated degranulation. |
Specific kinase inhibitors (U0126 for MEK1/2, SB203580 for p38, LY294002 for PI3K), eosinophil peroxidase degranulation assay, HL-60 eosinophilic cells |
Immunopharmacology and immunotoxicology |
Medium |
12784909
|
| 2003 |
CCL24 backbone dynamics determined by 15N NMR relaxation: the N-loop and third beta-strand forming the receptor-binding groove show substantial mobility, suggesting conformational rearrangements during receptor binding; comparison with eotaxin and eotaxin-3 reveals conserved dynamic features at the putative CCR3-binding surface. |
15N NMR relaxation (T1, T2, NOE measurements), model-free analysis of backbone dynamics |
Proteins |
High |
12486712
|
| 2003 |
IL-4 and IL-13 upregulate CCL24 production by bronchial epithelial cells; IFN-gamma and glucocorticoids attenuate this production, demonstrating cytokine-dependent transcriptional regulation of CCL24 in the airway epithelium. |
In vitro bronchial epithelial cell stimulation, mRNA expression analysis, ELISA for CCL24 protein, immunohistochemistry in asthmatic biopsies |
Cellular immunology |
Medium |
14698143
|
| 2005 |
IL-13 is required for allergen-induced CCL24 expression in the lung (eotaxin-2 mRNA almost completely absent in IL-13 gene-targeted mice after OVA challenge). In eotaxin-2 knockout mice, airway (luminal) eosinophilia after IL-13 administration is profoundly reduced, but peribronchial tissue eosinophilia is preserved. Macrophages in the airway lumen are the IL-13-induced source of CCL24, distinct from eotaxin-1 expressed in tissue. |
Gene-targeted mice (IL-13-/-, eotaxin-2-/-), IL-13 lung transgenic mice, intratracheal IL-13 administration, compartment-specific eosinophil and chemokine analysis, immunohistochemistry |
The Journal of biological chemistry |
High |
15647285
|
| 2003 |
IL-13 directly stimulates oesophageal tissue (via STAT6 signaling) to produce CCL24 (and CCL11), and this oesophagus-derived CCL24 is sufficient to promote eosinophil migration; STAT6-deficient oesophageal rings fail to produce CCL24 upon IL-13 treatment. |
Isolated oesophageal ring ex vivo assay, STAT6-/- mice, ELISA, eosinophil chemotaxis assay |
Clinical and experimental allergy |
High |
20030665
|
| 2006 |
CCL24 (but not CCL26/eotaxin-3) directly stimulates human lung fibroblast proliferation and collagen synthesis, demonstrating a direct profibrogenic role for CCL24 on stromal cells independent of eosinophil recruitment. |
3H-thymidine proliferation assay, 3H-hydroxyproline collagen incorporation, biochemical staining, Boyden chamber chemotaxis, alpha-SMA immunostaining, TGF-beta1 ELISA |
Annals of allergy, asthma & immunology |
Medium |
20143648
|
| 2006 |
Epithelial differentiation state determines CCL24 vs CCL26 production in response to IL-4/IL-13: squamous differentiated ALI cultures produce predominantly CCL24, while mucociliary differentiated cultures produce predominantly CCL26. TNF-alpha reduces IL-4-induced CCL24 in submerged but not ALI cultures. |
Air-liquid interface (ALI) culture with varying retinoic acid concentrations, submerged cultures, IL-4/IL-13 stimulation, mRNA and protein quantification |
Molecular immunology |
Medium |
16740309
|
| 2007 |
CCL24 production by eosinophil-lineage cells is regulated by the transcription factor GATA-1: ATRA-induced differentiation of HT93 cells into eosinophilic lineage upregulates CCR3 and CCL24 production; siRNA knockdown of GATA-1 reduces differentiation markers and CCL24 production, while GATA-1 overexpression enhances CCL24 production. |
ATRA-induced differentiation, siRNA knockdown of GATA-1, GATA-1 overexpression clones, MACS-enriched CCR3+ cells, ELISA for CCL24 |
Biological & pharmaceutical bulletin |
Medium |
17917245
|
| 2013 |
CCL24 stimulates migration, invasion, and adhesion of extravillous trophoblasts (HTR8/SVneo cells), increases MMP2 activity (without affecting TIMP2), and promotes binding to collagen IV and fibronectin, identifying a role for CCL24 in placental trophoblast invasion and spiral arteriole remodeling. |
xCELLigence real-time system, wound-healing assay, Matrigel invasion assay, zymography, reverse zymography, extracellular matrix adhesion assay, recombinant human CCL24 |
Human reproduction |
Medium |
23477905
|
| 2015 |
CCL24 promotes trophoblast proliferation, viability, and invasiveness via CCR3 through ERK1/2 and PI3K signaling pathways (not JNK or p38), activating Ki67 and MMP9; steroid hormones (progesterone, hCG) and decidual stromal cells upregulate CCL24/CCR3 in trophoblasts. |
Recombinant CCL24, pathway inhibitors (ERK1/2, PI3K, JNK, p38), proliferation and invasion assays, Western blot for downstream molecules |
Reproduction |
Medium |
26316550
|
| 2015 |
CD163 on alveolar macrophages binds Der p1 (house dust mite allergen) in a calcium-dependent manner; CD163 deficiency leads to augmented CCL24 production by macrophages in response to Der p1, which in turn drives airway eosinophilia and mucous cell metaplasia reversible by anti-CCL24 neutralizing antibody. |
Cd163-/- mice, HDM/Der p1 challenge model, anti-CCL24 neutralizing antibody, adoptive transfer of alveolar macrophages, BMMΦ stimulation, proteomic analysis of CD163-Der p1 binding |
Mucosal immunology |
High |
26376364
|
| 2016 |
TPL-2 (MAP3K8) kinase in dendritic cells negatively regulates CCL24 expression; TPL-2-deficient (Map3k8-/-) mice show exaggerated airway eosinophilia upon HDM challenge that is dependent on elevated DC-derived CCL24, and blockade of CCL24 prevents the exaggerated eosinophilia in mice receiving HDM-pulsed Map3k8-/- DCs. |
Map3k8-/- mice, mixed bone marrow chimeras, conditional DC-specific KO, adoptive transfer, anti-CCL24 blockade, ELISA, RNA sequencing |
The Journal of allergy and clinical immunology |
High |
27484038
|
| 2017 |
Commensal microbiota maintains alveolar macrophages at low CCL24 production; antibiotic-mediated depletion of commensal bacteria increases CCL24 secretion from alveolar macrophages, which suppresses γδT17 cell-mediated anti-tumor responses. Adoptive transfer of normal alveolar macrophages or CCL24 antibody neutralization restored γδT17 cells and anti-tumor activity. |
Antibiotic-treated mouse model, adoptive transfer of alveolar macrophages, CCL24 antibody neutralization, flow cytometry, gene expression analysis |
Scientific reports |
Medium |
28785009
|
| 2019 |
CCL24 blockade with monoclonal antibody CM-101 significantly reduces activation of dermal fibroblasts, their transition to myofibroblasts induced by SSc serum, and inhibits endothelial cell activation; in bleomycin-induced animal models, CM-101 profoundly inhibited both dermal and pulmonary fibrosis and inflammation. |
Anti-CCL24 monoclonal antibody (CM-101), primary fibroblast and endothelial cell activation assays with SSc serum, bleomycin mouse models (prevention and treatment), histology |
Annals of the rheumatic diseases |
High |
31129606
|
| 2020 |
CCL24 drives liver fibrosis and inflammation through CCR3: Ccl24 knockout mice show attenuated MCD-diet-induced liver damage; CM-101 anti-CCL24 antibody reduces liver fibrosis in three experimental models (MCD, STAM, TAA). Mechanistically, CCL24 promotes hepatic stellate cell (HSC) motility, alpha-SMA expression, and pro-collagen I secretion via CCR3. |
Ccl24 knockout mice, MCD/STAM/TAA animal models, anti-CCL24 antibody (CM-101), LX2 HSC activation assays (motility, alpha-SMA, pro-collagen I), liver histology and fibrosis scoring |
JHEP reports |
High |
32039405
|
| 2020 |
In clear cell renal cell carcinoma, gankyrin recruits STAT3 via direct binding, and STAT3 binds the CCL24 promoter to drive CCL24 expression. Autocrine CCL24 then enhances gankyrin expression and STAT3 activation via CCR3, forming a positive regulatory loop that promotes tumor progression and pazopanib resistance. |
Co-IP (gankyrin-STAT3 interaction), ChIP assay (STAT3 binding to CCL24 promoter), CCR3 inhibitor (SB328437), gankyrin knockdown/overexpression, in vivo subcutaneous/metastasis/orthotopic models, antibody chip for secreted factors |
Cell death & disease |
High |
32051393
|
| 2022 |
CCL24/CCR3 axis promotes M2 macrophage polarization and cardiac fibroblast activation in heart failure: CCR3 is expressed on macrophages and fibroblasts; CCL24 antibody reduces Ang II-induced cardiac hypertrophy, fibrosis, and M2 macrophage/monocyte polarization; in vitro, CCL24 promotes cardiac fibroblast activation and migration through CCR3's G protein-coupled receptor function. |
CCL24 antibody treatment, Ang II mouse model, single-cell CyTOF, RNA-seq, immunofluorescence co-localization, in vitro primary cardiac fibroblast activation assays |
Cell biology and toxicology |
Medium |
36131165
|
| 2023 |
CCL24 promotes proliferation of primary human hepatic stellate cells and cholangiocytes; in Mdr2-/- PSC mice, CCL24 is expressed in liver macrophages; CM-101 (anti-CCL24) reduces biliary inflammation, fibrosis, and cholestasis markers. Spatial transcriptomics showed CCL24 neutralization reduced cholangiocyte proliferation and senescence. |
Mdr2-/- mouse model, anti-CCL24 antibody (CM-101), primary human HSC and cholangiocyte proliferation assays, spatial transcriptomics, ANIT cholestasis mouse model |
JCI insight |
High |
37345655
|
| 2024 |
Increased matrix stiffness drives CCL24 secretion via the mechanosensitive ion channel Piezo1 through the Wnt2/Wnt11 signaling pathway; Piezo1 knockdown in dermal fibroblasts abolishes fibroproliferative phenotypes even on stiff substrates, and AAV-mediated Piezo1 knockdown ameliorates skin fibrosis progression in mice. |
Piezo1 knockdown (siRNA, AAV), Wnt2/Wnt11 pathway analysis, stiffness-controlled substrates, in vivo mouse skin fibrosis model, CCL24 ELISA |
Cell death & disease |
Medium |
38267432
|
| 2023 |
CCL24 induces MUC5AC mucin expression in airway epithelial cells via CCR3-mediated ERK1/2 and p38 MAPK signaling; CCR3 inhibitor (SB328437) and specific ERK1/2 (U0126) and p38 (SB203580) inhibitors, as well as siRNA knockdown of ERK1/2 and p38, blocked CCL24-induced MUC5AC upregulation in NCI-H292 cells and primary nasal epithelial cells. |
RT-PCR, ELISA, Western blot, specific kinase inhibitors (U0126, SB203580, SB328437), ERK1/2 and p38 siRNA knockdown, primary human nasal epithelial cells |
International archives of allergy and immunology |
Medium |
37552963
|
| 2025 |
Cardiac-resident macrophages are the primary source of CCL24 in the heart during pressure overload. CCL24 deficiency ameliorates cardiac fibrosis following transverse aortic constriction (TAC). CCL24 directly activates cardiac fibroblasts through CCR3 via PI3K signaling and TGF-beta release. Fibroblast-specific CCR3 deletion (CRISPR/Cas9) improves cardiac function and reduces fibrosis comparably to CCL24 deficiency. CCL24-blocking antibody or CCR3 antagonist both enhanced cardiac function in pressure-overloaded mice. |
CCL24 KO mice, TAC model, fibroblast-specific CCR3 CRISPR/Cas9 KO, primary cardiac fibroblast activation assays, PI3K inhibition, CCL24-blocking antibody, CCR3 antagonist, cardiac function measurements |
Circulation research |
High |
40955564
|
| 2023 |
CCL24 intraperitoneal injection in mice selectively recruits neutrophils and monocytes; in PSC patients and CCL24-treated hepatic stellate cells, CCL24 activates monocyte and neutrophil chemotaxis pathways. CM-101 anti-CCL24 antibody in an ANIT-induced cholestasis mouse model inhibits peribiliary neutrophil and macrophage accumulation while reducing biliary hyperplasia and fibrosis. |
In vivo CCL24 injection with flow cytometry, anti-CCL24 antibody treatment in ANIT mouse model, serum proteomics (Olink assay), in vitro HSC treatment with CCL24 |
Cells |
Medium |
38334601
|
| 2025 |
mTORC1 hyperactivation in fibroblasts and interstitial macrophages suppresses CCL24 expression via aberrant STAT3 signaling and promotes CCR3 expression in macrophages, forming a dysregulated CCL24-CCR3 axis that drives sarcoid-like granuloma formation; rapamycin and azithromycin attenuate granuloma burden and normalize CCL24-CCR3 signaling. |
TSC1/TSC2 conditional KO (Fsp1-Cre) mice, cytokine/chemokine array, rapamycin and azithromycin treatment, STAT3 signaling analysis |
bioRxivpreprint |
Medium |
40791394
|
| 2026 |
CCL24 secreted by colorectal cancer tumor cells recruits CCR3+ tumor-associated macrophages (TAMs), which promote immunosuppression by driving nuclear translocation of YAP1 (Hippo pathway transcription factor); CCL24 knockout or antibody-mediated inhibition suppresses TAM accumulation, increases CD8+ T cells, and reduces tumor growth in immunocompetent but not immunodeficient mice. |
CCL24 knockout CRC cells, co-culture with macrophages/CD8+ T cells, subcutaneous and metastasis syngeneic mouse models, AOM/DSS CRC model, YAP1 nuclear translocation analysis, flow cytometry |
International journal of biological sciences |
Medium |
41694595
|
| 2026 |
Macrophage-derived CCL24 promotes mesothelial-to-mesenchymal transition (MMT) via the CCR3/p38 MAPK pathway in peritoneal fibrosis; pMSC-derived exosomes deliver miR-320d into macrophages, which suppresses CCL24 synthesis via the KLF7/STAT3 pathway, thereby ameliorating MMT-driven peritoneal fibrosis. |
CRISPR-Cas9 CCL24 KO podocytes, miR-320d mimic/inhibitor, KLF7 target validation, STAT3 phosphorylation analysis, CCR3/p38 MAPK pathway inhibitors, pMSC-derived exosomes, rat peritoneal dialysis model |
Scientific reports |
Medium |
41781517
|
| 2016 |
CCL24 increases TLR4 expression in human coronary artery endothelial cells via JNK/SAPK and p38 MAPK transcriptional signaling, and post-transcriptionally via RNA-binding proteins HuR and TTP stabilizing TLR4 mRNA, and PRAT4A-regulated TLR4 trafficking; in vivo, CCL24 administration worsened high-cholesterol diet-induced atherosclerosis in LdlrWT but not LdlrTlr4 mice, confirming TLR4 dependence. |
In vitro endothelial cell stimulation with CCL24, TLR4 siRNA, kinase inhibitors (JNK, p38, ERK1/2), HuR/TTP/PRAT4A pathway analysis, Ldlr/LdlrTlr4 mice with high-cholesterol diet |
American journal of translational research |
Medium |
28078007
|