| 2001 |
CCL17 (TARC) binds CCR4 and induces concentration-dependent platelet aggregation and calcium flux; CCR4 expression on platelets was confirmed by flow cytometry, and anti-CCR4 monoclonal antibody inhibited CCL17-induced aggregation. Full platelet aggregation required cyclooxygenase metabolites (blocked by aspirin) and plasma components. |
Flow cytometry (CCR4 on platelets), calcium flux assay, platelet aggregation assay, antibody inhibition |
Thrombosis research |
Medium |
11248289
|
| 2003 |
CCL17 (TARC) is expressed by Langerhans cells and keratinocytes in atopic dermatitis lesions; mRNA localization by in situ RT-PCR showed expression in epidermal keratinocytes, dermal endothelial cells, and infiltrating cells, with CCR4 mRNA in endothelial and infiltrating cells. |
In situ RT-PCR |
The Journal of dermatology |
Low |
12598706
|
| 2003 |
TGF-β1 inhibits IFN-γ/TNF-α-induced CCL17 (TARC) production in HaCaT keratinocytes via Smad2/3 signaling; overexpression of Smad7 (inhibitory Smad) reversed TGF-β1 suppression, while overexpression of Smad2 or Smad3 alone was sufficient to inhibit CCL17 production. |
Adenoviral gene transfer of Smad constructs, RT-PCR, ELISA |
Journal of dermatological science |
Medium |
12615364
|
| 2003 |
Normal human epidermal keratinocytes (NHEK) do not produce detectable CCL17 protein in vitro even after cytokine stimulation; CCL17 production observed in HaCaT cells is a cell-line-specific phenomenon. |
ELISA, RT-PCR |
Journal of dermatological science |
Medium |
12615362
|
| 2003 |
Murine Langerhans cells produce CCL17 (TARC) that is upregulated by TNF-α and IL-4 and downregulated by IFN-γ in a dose-dependent manner. |
RT-PCR (mRNA), ELISA (protein) on cultured murine Langerhans cells |
Cytokine |
Medium |
12967648
|
| 2004 |
CCL17 (TARC) and ICAM-1 are constitutively co-expressed with E-selectin in dermal microvascular endothelium of noninflamed human skin, as demonstrated by confocal multicolor immunofluorescence, providing a basis for constitutive cutaneous T cell immunosurveillance via CCR4. |
Confocal multicolor immunofluorescence, immunohistochemistry |
Journal of immunology |
Medium |
14734737
|
| 2004 |
Intradermal injection of TARC/CCL17 in BALB/c mice induced CD4+ lymphocyte infiltration in a dose-dependent manner, induced IL-4 mRNA (but not IFN-γ mRNA) expression, and induced its own production (autocrine loop) in keratinocytes along with CCL27 mRNA, demonstrating a Th2-dominated inflammatory reaction. |
In vivo intradermal injection, histology, RT-PCR |
Experimental dermatology |
Medium |
15086343
|
| 2005 |
TNF-α and IFN-γ synergistically induce CCL17 production from HaCaT keratinocytes via NF-κB and p38 MAPK pathways; inhibitors of NF-κB and p38 blocked this production, and EGFR tyrosine kinase inhibition paradoxically enhanced CCL17 production. Roxithromycin suppressed CCL17 via partial inhibition of p38 and NF-κB, independently of IκBα degradation. |
Pharmacological inhibitors, NF-κB-driven luciferase reporter assay, ELISA, Western blot |
The Journal of investigative dermatology |
Medium |
16117790
|
| 2005 |
CCL17 (TARC) impairs β2-adrenergic receptor (β2-AR) function in human peripheral blood T lymphocytes by activating Src kinases, leading to GRK2 membrane translocation, Src-dependent serine phosphorylation of β2-AR, β-arrestin association, and a switch from cAMP/CREB signaling to MAPK pathway activation. |
Phosphorylation assays (Western blot), co-immunoprecipitation (GRK2/β-arrestin association), cAMP/CREB reporter, MAPK activation assay in primary human T cells |
American journal of physiology. Lung cellular and molecular physiology |
Medium |
15749741
|
| 2006 |
IL-4 induces CCL17 (TARC/CCL17) expression in human T cells via two STAT6 binding motifs in the CCL17 promoter; EMSA and chromatin immunoprecipitation confirmed STAT6 binding to both sites; site-directed mutagenesis showed both sites are required for full IL-4-induced promoter activity. |
EMSA, chromatin immunoprecipitation, reporter gene assay, site-directed mutagenesis |
European journal of immunology |
High |
16810739
|
| 2006 |
IL-4 induction of mTARC/CCL17 in murine macrophages requires STAT6 and is mediated by cooperative interactions among multiple STAT6 binding sites in the mTARC promoter; in vitro binding assays and transient transfection identified five functional STAT6 sites, with the two most proximal sites (conserved with human) being most critical. |
In vitro STAT6 binding assays, transient transfection with isolated promoter fragments, site-directed mutagenesis, primary macrophage culture |
BMC molecular biology |
High |
17134490
|
| 2006 |
House dust mite allergen (Der p), IL-4, and TGF-β cooperatively induce CCL17 (TARC) expression in bronchial epithelial cells via ADAM-mediated EGFR transactivation, MAPK signaling, and NF-κB activation; supernatants induced TARC-dependent T cell trafficking. |
Specific kinase inhibitors, immunodetection, gel-shift assays, chemotaxis assay, primary bronchial epithelial cells |
American journal of respiratory cell and molecular biology |
Medium |
17023689
|
| 2007 |
RSV infection synergizes with IL-4/IL-13 to induce optimal CCL17 (TARC) production in lung epithelial cells; this reflects differential induction of NF-κB (by RSV) and STAT6 (by Th2 cytokines), both of which are present in the TARC promoter. |
In vitro cell culture with RSV and cytokines, in vivo mouse model with vaccinia priming, TARC ELISA |
Journal of immunology |
Medium |
17641031
|
| 2008 |
HDAC inhibitor vorinostat inhibits STAT6 phosphorylation and decreases its mRNA levels in Hodgkin lymphoma cells, causing reduced CCL17 (TARC) expression and secretion; vorinostat also inhibited TSLP-activated dendritic cell CCL17 secretion. |
Western blot (STAT6 phosphorylation), RT-PCR, ELISA, dose-response analysis |
Blood |
Medium |
18541724
|
| 2008 |
EBV latent membrane protein 1 (LMP1) drives CCL17 and CCL22 production in B cells through NF-κB activation; LMP1-expressing large tumor cells in ALPD selectively expressed CCL17 and CCL22, attracting CCR4+ T cells and Foxp3+ regulatory T cells. |
Immunohistochemistry, previously reported mechanistic link via NF-κB in EBV-immortalized B cells |
Cancer science |
Low |
18271928
|
| 2009 |
The adenylyl cyclase-cAMP system suppresses IFN-γ/TNF-α-induced CCL17 (TARC) and CCL22 production in HaCaT keratinocytes by inhibiting NF-κB activation through the p38 MAPK pathway; forskolin and dibutyryl-cAMP both suppressed p38 phosphorylation and NF-κB-driven responses. |
Pharmacological activators of adenylyl cyclase, p38 inhibitor, NF-κB inhibitor, ELISA, Western blot |
Molecular immunology |
Medium |
19371952
|
| 2010 |
CCL17 suppresses sulforaphane-inducible heme oxygenase-1 (HO-1)-mediated inhibition of CCL17/CCL22 in keratinocytes: HO-1 siRNA abolished suppression and carbon monoxide (but not other HO-1 products) replicated the effect, demonstrating that HO-1-derived CO mediates the CCL17-suppressive pathway. |
siRNA knockdown of HO-1, exogenous CO treatment, Western blot, ELISA |
Archives of pharmacal research |
Medium |
21116791
|
| 2011 |
CCL17 deficiency (Ccl17E/E mice) leads to expansion of Foxp3+ regulatory T cells, reduces atherosclerosis in atherosclerosis-prone mice, and this protection is dependent on Tregs; CCL17 expressed by DCs limits Treg maintenance and expansion. A blocking antibody specific for CCL17 expanded Tregs and reduced atheroprogression. |
Knockout mouse model, blocking antibody treatment, T cell transfer, flow cytometry |
The Journal of clinical investigation |
High |
21633167
|
| 2011 |
CCL17 promotes intestinal inflammation and counteracts regulatory T cell-mediated colitis protection: CCL17 has an autocrine effect on DCs promoting IL-12 and IL-23 secretion (TLR-induced), Th1/Th17 differentiation, and reduced Foxp3+ Treg induction. CCR4 expression by recipients (not transferred T cells) was required for colitis induction. |
DSS colitis and T cell transfer models in Ccl17E/E mice, in vitro DC/T cell differentiation assays, cytokine profiling |
Gastroenterology |
High |
22057112
|
| 2013 |
CCL17 (TARC) induces CGRP synthesis and secretion in human airway epithelial cells via CCR4; CCL17-induced CGRP release was blocked by an anti-CCR4 antibody and CCR4 was internalized after CCL17 ligation. CCL17 induced a greater CGRP release than IL-13, CCL22, or TNF-α/GM-CSF/IL-1 mixture. |
RT-PCR, quantitative immunofluorescence, enzyme immunoassay, anti-CCR4 blocking antibody, CCR4 internalization by flow cytometry, primary human airway cells |
The Journal of allergy and clinical immunology |
Medium |
23731651
|
| 2013 |
CCL17 (TARC) induces migration of colon cancer cells (HT-29, AZ-97) via CCR4, with downstream activation of RhoA and Rho-kinase; CCR4 antagonist or anti-CCR4 antibody inhibited migration; Rho-kinase inhibitor Y-27632 and isoprenylation inhibitor GGTI-2133 abolished CCL17-induced chemotaxis. |
Transwell migration assay, ELISA and G-LISA for RhoA activation, CCR4 antibody/antagonist inhibition, RT-PCR |
International journal of colorectal disease |
Medium |
23649168
|
| 2014 |
CCL17 induces trophoblast migration and invasion via CCR4, upregulating MMP-2, MMP-13, integrin α5, and integrin β1 while downregulating TIMP-1; CCL17 and CCR4 were co-expressed at the fetomaternal interface (CCL17 in decidua/trophoblasts, CCR4 on invading interstitial extravillous trophoblasts). |
Immunohistochemistry, transwell migration and invasion assays, Western blot |
Reproductive sciences |
Medium |
24401476
|
| 2014 |
HMG-CoA reductase regulates CCL17-induced colon cancer cell migration via geranylgeranylation and RhoA activation; simvastatin reduced CCL17-induced RhoA activation and migration, reversed by mevalonate and geranylgeranyl pyrophosphate (GGPP). |
G-LISA (active RhoA), transwell migration assay, pharmacological rescue with mevalonate and GGPP |
Biochemical and biophysical research communications |
Medium |
24582560
|
| 2014 |
CCL17 production by synovial macrophages in osteoarthritis requires IRF4 expression, which is downstream of GM-CSF, with Jmjd3 (demethylase) as an intermediate; genetic deletion of IRF4, CCL17, or CCR4 reduced both pain and cartilage destruction/osteophyte formation in collagenase-induced OA (CiOA) model. |
Gene-deficient mice (Irf4-/-, Ccl17E/E, Ccr4-/-), therapeutic antibody neutralization, cell sorting with qPCR |
Arthritis research & therapy |
High |
29622035
|
| 2014 |
NOD1 ligation of dendritic cells directly induces CCL17 (and CCL22) production, driving Th2 responses; adoptive transfer of NOD1-conditioned wild-type DCs (but not CCL17-deficient DCs) exacerbated experimental asthma, demonstrating that DC-derived CCL17 mediates NOD1-driven Th2 amplification in vivo. |
In vitro DC culture with NOD1 agonist, adoptive transfer of DCs from wild-type vs. CCL17-deficient mice, mouse asthma model |
American journal of respiratory and critical care medicine |
High |
24661094
|
| 2016 |
CCL17 stimulates submesothelial fibroblast migration and collagen production (CCL17-CCR4 axis); antibody blockade of CCL17 reduced macrophages, myofibroblasts, and fibrosis and improved peritoneal function in a mouse model; inflammatory macrophages switch to CCL17/CCL22/arginase-1-expressing phenotype after injury. |
In vitro fibroblast culture with CCL17, diphtheria toxin macrophage ablation, anti-CCL17 antibody treatment, fate-mapping reporter mice, chimeric mice |
The Journal of pathology |
High |
31579932
|
| 2017 |
RNA aptamers against CCL17 inhibit CCR4-dependent T cell chemotaxis in vitro and significantly prevent ear swelling and T cell infiltration in a murine contact hypersensitivity model in vivo, validating CCL17-CCR4 as a chemotactic axis. |
Transwell chemotaxis assay, in vivo contact hypersensitivity model with systemic aptamer administration |
Molecular therapy |
Medium |
29103909
|
| 2017 |
miR-155-5p positively regulates CCL17-induced colon cancer cell migration by targeting the 3'-UTR AU-rich elements of RhoA mRNA, thereby sustaining RhoA mRNA levels; knockdown of miR-155-5p decreased CCL17-provoked RhoA activation and cell chemotaxis; validated by RNA immunoprecipitation and target site blocker. |
miRNA knockdown, RNA immunoprecipitation, target site blocker, RhoA activation assay, chemotaxis assay |
Oncotarget |
Medium |
28146427
|
| 2018 |
CCL17 is expressed in hippocampal CA1 neurons in mice; LPS-induced Ccl17 upregulation in the hippocampus depends on local TNF signaling (while CCL22 upregulation requires GM-CSF). CCL17 deficiency reduces microglia density and alters microglia morphology; electrophysiology showed CCL17 downmodulates basal synaptic transmission at CA3-CA1 Schaffer collaterals. |
Fluorescence reporter mouse model, LPS challenge, electrophysiology (patch-clamp of Schaffer collaterals), computer-assisted morphological analysis, TNF/GM-CSF blocking |
Glia |
High |
30277599
|
| 2018 |
IL-4 induces CCL17 production in human monocytes and murine macrophages via IRF4 in a STAT6-dependent manner; IL-4 upregulates IRF4 at the epigenetic level by increasing JMJD3 demethylase expression and activity. ChIP showed increased STAT6 association at promoters of CCL17, IRF4, and JMJD3 genes. STAT6 silencing decreased CCL17, JMJD3, and IRF4. |
siRNA gene silencing (STAT6, IRF4, JMJD3), ChIP assay, ELISA, Western blot, primary human monocytes and murine macrophages |
The Journal of biological chemistry |
High |
29871928
|
| 2018 |
TNF drives inflammatory pain and arthritic pain initiation via a GM-CSF→JMJD3→IRF4→CCL17 pathway; once arthritis is established, blockade of GM-CSF or CCL17 (but not TNF) still ameliorates disease, showing CCL17 acts downstream of both TNF and GM-CSF and is required throughout disease course. |
In vivo zymosan/arthritis models, antibody blockade of TNF/GM-CSF/CCL17, Irf4-/- and Ccl17E/E mice |
JCI insight |
High |
29563337
|
| 2018 |
CCL17 promotes bladder cancer cell migration and invasion via CCR4-ERK1/2-MMP13 axis; CCR4 knockdown attenuated invasive capability; exogenous CCL17 induced CCR4 expression, ERK1/2 phosphorylation, and MMP13 activation. |
siRNA knockdown of CCR4, Western blot (ERK1/2, MMP13), migration/invasion assays |
Journal of cellular biochemistry |
Medium |
30230587
|
| 2018 |
15-Lipoxygenase isoform ALOX15B (and to lesser extent ALOX15) regulates CCL17 production in IL-4-stimulated human macrophages through an SREBP-2-dependent mechanism; silencing ALOX15B reduced SREBP-2 processing, cellular cholesterol intermediates, and CCL17 production, with functional consequence on T cell migration. |
siRNA knockdown of ALOX15/ALOX15B, SREBP-2 ChIP, sterol measurement, T cell migration assay |
Frontiers in immunology |
Medium |
30197642
|
| 2019 |
CD248 on fibroblasts interacts with macrophage galectin-3, which then induces CCL17 expression in macrophages; galectin-3-deficient macrophages show decreased CCL17 in fibrotic kidneys. CCL17 produced by macrophages then stimulates fibroblast collagen production. CD248 knockout reduces CCL17/CCL22 in macrophages and attenuates fibrosis. |
Co-IP/interaction studies (CD248-galectin-3), Cd248 knockout mice, galectin-3-deficient macrophages, parabiosis, reporter mice |
Scientific reports |
Medium |
33033277
|
| 2020 |
Recombinant CCL17 (rCCL17) activates CCR4/ERK/Nrf2/CD163 signaling in microglia to promote hematoma resolution after intracerebral hemorrhage; CCR4 co-localizes with microglia; rCCL17 increased ERK1/2 phosphorylation, Nrf2, and CD163 expression and reduced hematoma volume/brain edema. Effects were abolished by CCR4 inhibitor C021, Nrf2 inhibitor ML385, and CD163 CRISPR knockout. |
In vivo ICH mouse model, recombinant CCL17 intranasal delivery, pharmacological inhibitors (C021, ML385), CRISPR knockout of CD163, Western blot, immunofluorescence |
Neurotherapeutics |
Medium |
32783091
|
| 2020 |
CCL17 in inflammatory pain and arthritis acts on CCR4+ non-bone-marrow-derived (radiation-resistant) cells; nerve growth factor (NGF), CGRP, and substance P are all required downstream of CCL17 for inflammatory pain development; CCL17 expression in inflammation models is predominantly in macrophage lineage populations and is GM-CSF-dependent. |
Radiation chimera approach, cell depletion, CCL17 reporter mice, gene-deficient mice, blocking antibodies to NGF/CGRP/substance P |
Journal of immunology |
High |
32461237
|
| 2021 |
Lactate from pituitary adenoma cells induces M2 polarization of tumor-associated macrophages via mTORC2 and ERK signaling pathways; activated TAMs then secrete CCL17 to promote PA invasion via the CCL17/CCR4/mTORC1 axis; CCR4 signaling inhibition reduced invasion in vitro and in vivo. |
siRNA knockdown, specific pathway inhibitors (mTORC2, ERK, mTORC1), in vitro invasion assays, in vivo mouse model |
Theranostics |
Medium |
33664865
|
| 2021 |
Recombinant CCL17-dependent CCR4 activation alleviates neuroinflammation and neuronal apoptosis after intracerebral hemorrhage via the PI3K/AKT/Foxo1 signaling pathway; rCCL17 increased CCR4, PI3K, phospho-AKT, and Bcl-2, while decreasing Foxo1, IL-1β, TNF-α, and Bax. Effects were reversed by CCR4 inhibitor C021 or AKT inhibitor GDC0068. |
In vivo ICH mouse model, intranasal rCCL17, pharmacological inhibitors (C021, GDC0068), Western blot, immunofluorescence, TUNEL staining |
Journal of neuroinflammation |
Medium |
33648537
|
| 2021 |
EZH2 inhibitor tazemetostat upregulates CCL17 expression in B-cell lymphoma cells by inducing H3K27 demethylation at the CCL17 promoter; ChIP showed H3K27me3 enrichment at the CCL17 promoter, and tazemetostat treatment increased H3K27 demethylation and activated CCL17 gene transcription. CCL17 protein produced enhanced T cell recruitment in vitro. |
ChIP for H3K27me3, Western blot, ELISA, transwell T cell migration assay, gene set enrichment analysis |
Cancer science |
Medium |
34449935
|
| 2021 |
Rhinovirus-induced CCL17 expression in airway epithelium and mice is regulated by NF-κB (promotes expression) and STAT6 (required for CCL17 but not CCL22 in mice); type-2 cytokines and STAT6 activation increased CCL17 while suppressing CCL22; STAT6-knockout mice showed increased NF-κB chemokines with rapid viral clearance. |
Human RV challenge model, in vitro air-liquid interface primary epithelial cells, STAT6-knockout mice, in vivo RV mouse model |
American journal of respiratory cell and molecular biology |
Medium |
33264064
|
| 2022 |
CCL17 is expressed by CCR2+ macrophages and CD11b+ conventional dendritic cells after myocardial injury; GM-CSF signaling drives CCL17 expression through cooperative activation of STAT5 and canonical NF-κB. CCL17 inhibits Treg recruitment by biased activation of CCR4: CCL17 activates only Gq signaling whereas CCL22 activates both Gq and β-arrestin (ARRB) downstream of CCR4; CCL17 competitively inhibited CCL22-stimulated ARRB signaling and Treg migration. Ccl17 deletion improved LV remodeling and systolic function in a Treg-dependent manner. |
Ccl17 knockout mice, flow cytometry, RNA sequencing, biochemical signaling assays (Gq vs ARRB pathway dissection), cell trafficking studies, in vivo cell depletion, multiple injury models |
Circulation |
High |
35113652
|
| 2022 |
CCL17 activates CCR4/mTORC2 signaling in microglia after subarachnoid hemorrhage to promote M2-like polarization and neuroprotection; in vitro kinase assay confirmed mTORC2 activation; microglial-specific Rictor (mTORC2 component) knockdown via AAV abolished rCCL17 neuroprotection. CCL17 is secreted from neurons after oxyhemoglobin stimulation. |
In vitro kinase assay in primary microglia, intracerebroventricular AAV-mediated Rictor knockdown, in vivo rat SAH model, CCR4 inhibitor AZD2098 |
Stroke and vascular neurology |
Medium |
35882433
|
| 2022 |
CCL17 drives pathological cardiac hypertrophy and heart failure via T cell plasticity; Ccl17-KO significantly repressed aging- and Angiotensin II-induced cardiac hypertrophy/fibrosis accompanied by altered T cell subset differentiation; therapeutic anti-CCL17 neutralizing antibody inhibited Ang II-induced cardiac remodeling. |
Ccl17 knockout mice, neutralizing antibody treatment, Ang II infusion model, T cell subset flow cytometry |
The Journal of experimental medicine |
Medium |
35687056
|
| 2023 |
CCL17 drives pulmonary fibrosis by acting through CCR4 on fibroblasts to activate TGF-β/Smad signaling, promoting fibroblast activation and collagen production; CCL17 upregulated in alveolar macrophages; anti-CCL17 antibody blockade and CCR4-siRNA or CCR4 antagonist reduced BLM-induced fibrosis in mice. |
siRNA knockdown of CCR4, CCR4 antagonist C-021, anti-CCL17 antibody, bleomycin mouse model, Western blot (TGF-β/Smad pathway), immunofluorescence |
Biochemical pharmacology |
Medium |
36870575
|