| 1993 |
CCL7 (MCP-3/NC28) was molecularly cloned and identified as a CC chemokine with chemotactic activity for monocytes but not neutrophils; unlike MCP-1, the secreted MCP-3 protein is N-glycosylated. Expression is induced by PMA in U937 cells and super-induced by cycloheximide, and co-regulated with MCP-1 by IFN-γ and IL-13 in PBMC. |
cDNA cloning, recombinant protein expression, chemotaxis assay, glycosylation analysis, Northern blot/mRNA regulation studies |
European cytokine network |
High |
8318676
|
| 1994 |
Mouse MCP-3 was identified as the MARC/FIC protein; a cDNA library from LPS-stimulated WEHI-3 macrophages yielded a sequence identical to mouse MARC, establishing MARC/FIC as the murine orthologue of human CCL7. |
cDNA library screening with human MCP-3 probe, sequencing |
Biochemical and biophysical research communications |
Medium |
8002978
|
| 1995 |
CCL7 (MCP-3) binds CCR1 (C-C CKR1) as a functional high-affinity receptor: recombinant CCR1-expressing 293 cells bound 125I-MCP-3, MCP-3 induced directional migration of CCR1/293 cells, and MCP-3, MIP-1α, and RANTES cross-competed for binding and cross-desensitized migration responses. |
Stable transfection of CCR1 cDNA in HEK293 cells, 125I-radioligand binding competition, in vitro chemotaxis assay, calcium flux/desensitization |
The Journal of biological chemistry |
High |
7545673
|
| 1995 |
CCL7 (MCP-3) binds monocytes with high affinity (Kd ~1–3 nM, ~10,000 sites/cell) and signals through multiple CC chemokine receptors shared with MIP-1α, RANTES, and MCP-1, but also through receptor sites unique to MCP-3 (including sites shared with MIP-1β); MCP-3 was the only CC chemokine that consistently chemoattracted neutrophils in this study, implying a unique receptor on neutrophils. |
125I-MCP-3 radioligand binding on primary monocytes and neutrophils, calcium flux cross-desensitization, in vitro chemotaxis |
European journal of immunology |
High |
7589134
|
| 1996 |
Murine CCR2 (mCCR2) was cloned and shown to bind mouse FIC (mouse CCL7) with high affinity; 125I-JE (mMCP-1) binding to mCCR2-expressing HEK293 cells was competed by FIC but not by MIP-1α, C10, or N51/KC, establishing mCCR2 as a functional receptor for mouse CCL7. |
cDNA cloning, stable expression in HEK293 cells, 125I radioligand binding competition |
The Journal of biological chemistry |
High |
8662823
|
| 1996 |
N-terminally truncated CCL7 analog MCP-3(10–76) acts as a multi-receptor antagonist: it binds CCL7, MCP-1, and RANTES binding sites on THP-1 monocytes with high affinity but lacks chemotactic activity, inhibiting responses to all three chemokines, demonstrating that the N-terminus of CCL7 is critical for receptor activation but not binding. |
Radioligand binding competition on THP-1 cells, in vitro chemotaxis, enzyme release assay |
The Journal of biological chemistry |
High |
8631850
|
| 1996 |
CCL7 (MCP-4 comparison study) acts as a potent chemoattractant for monocytes and T lymphocytes via shared MCP-1/MCP-3/RANTES receptors, and for eosinophils via eotaxin-shared receptors, establishing CCL7's broad receptor promiscuity across leukocyte subsets. |
Radioligand binding cross-competition, chemotaxis assay, cross-desensitization on purified leukocyte populations |
The Journal of experimental medicine |
Medium |
8642349
|
| 1997 |
CCL7 (MCP-3/FIC) is expressed predominantly in airway epithelium after allergen challenge; pre-treatment with anti-MCP-3/FIC antibody significantly inhibited OVA-induced eosinophilia in bronchoalveolar lavage (46% eosinophils in control vs 8% with anti-CCL7), establishing a functional role for CCL7 in eosinophil recruitment in allergic airway inflammation. |
Mouse OVA sensitization/challenge model, immunocytochemistry for cellular source, RT-PCR, antibody neutralization in vivo, BAL differential cell counts |
Journal of immunology |
High |
9144514
|
| 1999 |
CCL7 (MCP-3) binds CCR5 with high affinity (IC50 ~2.14 nM competing 125I-MIP-1β) but acts as a natural antagonist: it binds CCR5 without inducing functional responses (calcium flux, chemotaxis), fails to cause CCR5 endocytosis, and inhibits CCR5 activation by MIP-1β. It was a weak inhibitor of HIV infection despite blocking gp120 binding. |
Radioligand (125I-MIP-1β) competition binding on CCR5-stable transfectants, calcium flux assay, chemotaxis assay, receptor internalization assay, HIV infection inhibition assay |
Blood |
High |
10477718
|
| 2002 |
CCL7 orchestrates oxidative stress-induced neutrophilic airway inflammation: ozone exposure up-regulated CCL7 protein in lung with airway epithelium as primary source; anti-CCL7 antibody decreased neutrophil recruitment by 63%, establishing a non-redundant role for CCL7 in neutrophil (not only monocyte) recruitment in vivo. |
Mouse ozone-exposure model, lung mRNA/protein quantification by RT-PCR/ELISA, IHC for cellular source, in vivo antibody neutralization, BAL differential cell counting |
Journal of immunology |
High |
11777981
|
| 2002 |
CCL7 (MCP-3) contributes 40–50% of eosinophil recruitment in type-2 (Th2-mediated, schistosomal antigen) pulmonary granulomas; endothelial cells in and near granulomas are a major in situ source of CCL7, and IL-4 drives maximal CCL7 expression from cultured mouse lung endothelial cells. |
Mouse pulmonary granuloma model, in vivo antibody neutralization, immunohistochemistry for source, IL-4 neutralization, cultured endothelial cell MCP-3 production assay |
The American journal of pathology |
High |
12107110
|
| 2008 |
CCL7 and MCP-1 (CCL2) provide additive, parallel contributions to CCR2-mediated Ly6C(high) inflammatory monocyte recruitment from bone marrow during Listeria monocytogenes infection; MCP-3−/− mice had fewer splenic and circulating Ly6C(high) monocytes, increased bone marrow monocytes, and fewer Tip-DCs, paralleling MCP-1−/− phenotype but not fully recapitulated by either single knockout. |
CCL7 knockout mice, L. monocytogenes infection model, flow cytometry for monocyte subsets, intracellular cytokine staining for Tip-DCs, bacterial burden quantification |
Journal of immunology |
High |
18453605
|
| 2008 |
CCL7 and CCL2 selectively promote differentiation of Nurr1+ precursors into midbrain dopamine neurons and enhance neuritogenesis, acting via CCR1 and CCR2 expressed in the ventral midbrain; CCL7 expression is developmentally regulated and reduced in Nurr1 knockout mice. |
Primary ventral midbrain precursor cultures, CCL2/CCL7 treatment, immunofluorescence for TH+ neurons, Nurr1-KO mouse analysis, developmental mRNA expression analysis |
Experimental cell research |
Medium |
18420193
|
| 2008 |
CCL7 (MCP-3) promotes type I collagen secretion by fibroblasts through activation of TGFβ signaling/MAPK pathways; TGFβ1 in turn stimulates CCL7 gene expression in fibroblasts, creating a positive feedback loop; microarray analysis confirmed additive effects on key TGFβ-regulated transcripts (PAI-1, OSF2, IGFBP6). |
Recombinant MCP-3 treatment of fibroblasts, collagen secretion assay, MAPK pathway inhibitor experiments, TGFβ signaling analysis (Smad phosphorylation), microarray, qRT-PCR |
Experimental cell research |
Medium |
19038247
|
| 2009 |
IL-1β and TNF-α stimulate CCL7 protein production in rat astrocytes through NFκB and p38/JNK MAPK pathways (but not ERK); selective inhibitors of NFκB (MG-132, SC-514) and p38/JNK (SB203580, SP600125) blocked cytokine-induced CCL7 upregulation, establishing signaling pathways for astrocytic CCL7 induction. |
Primary rat astrocyte cultures, ELISA for CCL7/CCL2, selective pharmacological inhibitors of NFκB (MG-132, SC-514) and MAPK pathways |
Brain research |
Medium |
19577550
|
| 2009 |
CCL7 and CCL2 together regulate the CCR2 pathway to limit IL-4 generation and control host resistance to Histoplasma capsulatum: CCL7 neutralization in CCL2−/− mice (but not wild-type) resulted in increased IL-4 production and elevated fungal burden, demonstrating functional redundancy between CCL7 and CCL2 via CCR2 in suppressing Th2 responses. |
CCL2-KO mice, CCR2-KO mice, in vivo CCL7 antibody neutralization, IL-4 ELISA/intracellular staining, arginase/YM1 transcription analysis, fungal burden quantification |
Journal of immunology |
High |
19587014
|
| 2010 |
CCL7 is markedly upregulated in carcinoma-associated fibroblasts (CAFs) co-cultured with oral squamous cell carcinoma (OSCC) cells; recombinant CCL7 promoted OSCC invasion and migration, and this was inhibited by CCL7 neutralizing antibody or anti-CCR1/anti-CCR3 antibodies, establishing CCL7-CCR1/CCR3 signaling as the axis for CAF-mediated cancer invasion. |
Microarray of co-culture vs monoculture, qRT-PCR, ELISA, invasion/migration assays, neutralizing antibody treatments, RT-PCR for receptor expression on cancer cells |
International journal of cancer |
Medium |
19937793
|
| 2012 |
TLR9 signaling promotes early induction of CCL7 (but not CCL2) in the lung during Cryptococcus neoformans infection; CCL7 reconstitution in TLR9-deficient mice restored CD11b+ dendritic cell accumulation, IFN-γ production, and effector cell recruitment, placing CCL7 downstream of TLR9 in the afferent phase of antifungal immunity. |
TLR9-KO mice, C. neoformans lung infection, CCL7 reconstitution by intratracheal administration, flow cytometry for immune cell subsets, cytokine ELISA, fungal burden |
Journal of immunology |
High |
22422883
|
| 2014 |
CCL7 has multiple glycosaminoglycan (GAG)-binding epitopes distributed across its surface (identified by hydroxyl radical footprinting and mutagenesis), enabling it to bind heparan sulfate with high affinity (~equivalent to CCL2) as a functional monomer without oligomerization; this is distinct from CCL2, which requires oligomerization for full GAG binding affinity. |
Hydroxyl radical footprinting (mass spectrometry), site-directed mutagenesis, surface plasmon resonance with heparan sulfate |
The Journal of biological chemistry |
High |
24727473
|
| 2014 |
Let-7d directly targets the 3'UTR of CCL7 mRNA; let-7d overexpression in renal cell carcinoma cells reduced CCL7 protein, suppressed PBMC recruitment in vitro and tumor macrophage infiltration in vivo; exogenous CCL7 reversed let-7d-mediated inhibition of migration and PBMC recruitment, establishing CCL7 as a direct target of let-7d regulation. |
Luciferase 3'UTR reporter assay for let-7d targeting, qRT-PCR, cell migration/PBMC recruitment assays, xenograft mouse models, rescue experiments with exogenous CCL7 |
Molecular cancer |
Medium |
25193015
|
| 2015 |
CCL7 in rhinovirus 1B infection drives neutrophil and macrophage influx into lungs and activates NF-κB p65/p50 subunits and airway hyperreactivity; CCL7 neutralization reduced NF-κB activation and airway hyperreactivity in non-allergic mice, linking CCL7 to NF-κB-mediated inflammation downstream of rhinovirus infection. |
In vivo murine RV1B infection, anti-CCL7 antibody neutralization, NF-κB subunit activation assay, lung function measurement (airway hyperreactivity), flow cytometry for leukocyte influx |
Journal of immunology |
Medium |
25847975
|
| 2016 |
CCL7 signals through CCR3 on colon cancer cells to promote EMT, cellular proliferation, invasion, and migration via ERK and JNK signaling pathways; CCL7-overexpressing HCT116/HT29 cells showed enhanced liver and lung metastasis in orthotopic mouse models. |
CCL7 overexpression in colon cancer cell lines, in vitro invasion/migration/proliferation assays, ERK/JNK pathway inhibitor experiments, ectopic and orthotopic mouse xenograft models |
Oncotarget |
Medium |
27167205
|
| 2019 |
Intrathecal injection of CCL7 induced dose-dependent pain-related behavior in naive mice; intrathecal neutralizing anti-CCL7 antibody attenuated CCI-induced neuropathic pain and augmented morphine/buprenorphine analgesia; spinal CCL7 is produced by both microglia and astrocytes after sciatic nerve injury, placing CCL7 in the spinal nociceptive signaling axis. |
Chronic constriction injury (CCI) mouse model, intrathecal CCL7 injection (dose-response), intrathecal anti-CCL7 antibody, von Frey and cold plate pain tests, qRT-PCR for CCL7 in spinal cord, primary glial cell cultures |
Cytokine |
Medium |
31003094
|
| 2019 |
CCL7 directly antagonizes neutrophil migration in vitro and negatively regulates neutrophil recruitment in Leishmania major-infected skin in vivo; CCL7-deficient mice showed enhanced neutrophilic infiltration with elevated IL-17 gene profile, and CCL7 add-back specifically reduced neutrophil influx, revealing a non-redundant role for CCL7 in limiting neutrophilic inflammation. |
CCL7-KO mice, L. major infection model, in vitro neutrophil migration assay with CCL7, in vivo CCL7 reconstitution, flow cytometry, cytokine profiling, parasite burden |
Frontiers in immunology |
High |
30671055
|
| 2019 |
Irisin promotes C2C12 myoblast proliferation through ERK phosphorylation–dependent upregulation of CCL7; CCL7 knockdown suppressed irisin-induced proliferation, placing CCL7 as a downstream effector of irisin-ERK signaling in myoblast proliferation. |
Irisin treatment of C2C12 cells, ERK inhibitor (U0126), transcriptomic analysis, qRT-PCR, CCL7 siRNA knockdown, proliferation assays (Pcna, Mki67, Mcm2) |
PloS one |
Medium |
31518371
|
| 2020 |
CCL7 recruits conventional DC1 (cDC1) into the lung tumor microenvironment to promote CD8+ and CD4+ T cell expansion; CCL7-deficient KP mice showed impaired cDC1 infiltration and T cell expansion, and CCL7 administration alone or with anti-PD-1 inhibited tumor development, establishing CCL7 as a cDC1-recruiting chemokine that enhances checkpoint immunotherapy. |
CCL7-KO in KrasLSL-G12D/Tp53fl/fl (KP) and KrasLSL-G12D/Lkb1fl/fl (KL) mouse models, flow cytometry, intratracheal CCL7 administration, anti-PD-1 combination therapy, survival analysis |
Nature communications |
High |
33257678
|
| 2020 |
B lymphocytes (particularly B220low innate B cells) produce CCL7 to recruit neutrophils and monocytes to the injured kidney; CCL7 blockade in mice reduced myeloid cell infiltration and ameliorated acute kidney injury, establishing B cell-derived CCL7 as a driver of sterile innate inflammation in AKI. |
Mouse AKI model, flow cytometry for B cell subsets and myeloid cells, B cell CCL7 production measurement, Siglec-G-deficient mice (increased innate B cells), in vivo CCL7 antibody blockade, human AKI patient cohort urinary CCL7 levels |
Journal of immunology |
High |
32737150
|
| 2020 |
SOX18 directly transactivates CCL7 promoter; CCL7 and CCR1 form a positive feedback loop (CCL7-CCR1-ERK/ELK1-SOX18) promoting gastric cancer invasion and metastasis; CCL7/MCAM knockdown reduced SOX18-mediated invasion, and CCR1 inhibitor BX471 suppressed SOX18-mediated metastasis. |
ChIP assay, luciferase reporter, CCL7/MCAM knockdown and overexpression, invasion/migration assays, ERK/ELK1 pathway inhibition, in vivo mouse metastasis models, BX471 (CCR1 inhibitor) treatment |
Oncogene |
Medium |
32616889
|
| 2020 |
CCL7 and CCL2 redundantly mediate migration of CCR2+/CX3CR1+ immunosuppressive M-MDSCs into the glioblastoma tumor microenvironment via CCR2; combined neutralization of CCL2 and CCL7 completely blocked CCR2-expressing cell migration to glioma-conditioned media, while single knockdown of either was insufficient. |
Bone marrow-derived MDSC migration assays with recombinant CCL2/CCL7, KR158B glioma CCL2/CCL7 knockdown, CCL2+CCL7 combined neutralization antibody, flow cytometry for tumor-infiltrating MDSCs in vivo |
Frontiers in immunology |
Medium |
36685592
|
| 2021 |
BRG1 (a chromatin remodeling protein) interacts with AP-1 to drive CCL7 transcription in hepatocytes in a redox-sensitive manner; BRG1 hepatocyte-specific deletion abolished CCL7 induction and macrophage infiltration in liver injury models; CK2-catalyzed phosphorylation of BRG1 mediates this regulation, and the process is blocked by the antioxidant N-acetylcysteine. |
Hepatocyte-specific BRG1 conditional KO mice, LPS/MCD diet liver injury models, in vitro LPS/palmitate treatment of hepatocytes, Co-IP (BRG1-AP-1 interaction), pharmacological inhibition (N-acetylcysteine), ChIP, macrophage migration assay |
Redox biology |
High |
34454163
|
| 2021 |
CCL7 promotes M1 macrophage polarization via CCR1/JAK2/STAT1 signaling; in vivo CCL7-neutralizing antibody reduced macrophage infiltration and attenuated angiotensin II-induced abdominal aortic aneurysm; JAK2/STAT1 inhibition blocked CCL7-induced M1 activation in macrophages. |
Ang II mouse AAA model, ex vivo macrophage polarization assays, CCR1 blockade, JAK2/STAT1 inhibitor, in vivo CCL7-neutralizing antibody treatment, histology/immunostaining |
Journal of cellular and molecular medicine |
Medium |
34189838
|
| 2021 |
Astrocyte-derived CCL7 promotes microglial activation and pro-inflammatory cytokine release after traumatic brain injury; CCL7 knockout improved microglia-controlled inflammation and neurological outcomes; CCL7-siRNA attenuated LPS-induced pro-inflammatory markers in astrocyte-microglia co-cultures. |
Rat TBI model, CCL7-KO, in vitro LPS-stimulated astrocyte-microglia co-cultures with CCL7-siRNA, cytokine/marker quantification, neurological scoring |
International immunopharmacology |
Medium |
34293712
|
| 2024 |
CCL7 impairs endothelial function through CCR3 via downregulation of AKT-eNOS and AKT/NRF2/HO-1/VEGF/SDF-1 pathways and upregulation of ERK/NF-κB/IL-1β/IL-6/TNF-α pathways; CCL7 is induced in endothelial cells by high glucose through c-Fos/c-Jun signaling; endothelial cell-specific Ccl7 knockout in STZ-diabetic mice ameliorated vasculopathy, neovasculogenesis, and wound repair. |
CCL7 KD/neutralization in endothelial cells, recombinant CCL7 treatment, specific pathway inhibitors (AKT, ERK, NF-κB), Ccl7 global KO and endothelial cell-specific KO mice in STZ/db/db/HFD DM models, tube formation/migration assays, in vivo ischemia/wound models, flow cytometry for circulating EPCs |
Science translational medicine |
High |
39231238
|
| 2025 |
Endothelial cell-derived CCL7 signals via CCR1 on macrophages to upregulate KAT2A expression, which catalyzes STAT1 succinylation; this epigenetic modification increases STAT1 binding to glycolytic gene promoters, driving metabolic reprogramming (enhanced glycolysis) and M1 polarization in macrophages, promoting septic acute lung injury; Ccr1-KO mice showed attenuated lung inflammation. |
EC-specific CCL7 inhibition in sepsis model, CCR1-KO mice, KAT2A expression analysis, STAT1 succinylation assay, ChIP for STAT1 binding to glycolytic gene promoters, metabolic flux assay, macrophage polarization assay |
Advanced science |
Medium |
40755420
|
| 2020 |
CCL7 secreted by Mo-MDSCs binds CCR2 on colorectal cancer micro-metastatic cells and activates JAK/STAT3 pathway to break dormancy and promote metastatic outgrowth; Co-immunoprecipitation confirmed CCL7-CCR2 co-localization; CCL7 inhibition maintained CRC cells in dormancy and reduced metastasis. |
Co-immunoprecipitation (CCL7-CCR2 interaction), in vitro dormancy cell models, mouse liver metastasis models, flow cytometry for MDSCs, qRT-PCR/Western blot for JAK/STAT3, in vivo CCL7/MDSC inhibitor administration |
Cell death & disease |
Medium |
33986252
|
| 2020 |
CCL7 regulates invadopodia maturation by promoting MMP-9 targeting to the invadopodia complex via RhoA signaling; dominant-negative RhoA blocked CCL7/CCR3-induced invadopodia maturation and collagen degradation, while constitutively active RhoA rescued maturation in CCL7-silenced cells; ERK and PI3K pathways regulated the initiation (not maturation) stage. |
CCL7 siRNA in cancer cells, dominant-negative and constitutively active RhoA overexpression, MMP-9 localization by immunofluorescence, invadopodia/collagen degradation assay, ERK/PI3K inhibitors, in vivo metastasis assay |
Cancer letters |
Medium |
32217106
|
| 2022 |
MSC-secreted CCL7 activates CCR1 on colorectal cancer cells, which downstream activates CBP/P300 to acetylate KLF5, promoting CXCL5 transcription; TGF-β (also secreted by MSCs) inhibits this process by regulating SMAD4 to suppress KLF5 transcriptional activation. |
Co-culture of MSCs with CRC cells, CCL7/CCR1 neutralization/inhibition, ChIP for KLF5-CXCL5 promoter binding, CBP/P300 acetylation assay, TGF-β/SMAD4 pathway analysis, in vivo CRC metastasis models |
Molecular therapy |
Medium |
35283273
|
| 2008 |
Oncostatin M (OSM) stimulates CCL7 and CCL8 expression in primary human dermal fibroblasts via ERK1/2 and p38 MAPK pathways, with p38 prolonging CCL7 mRNA half-life through inhibition of tristetraprolin; constitutive JAK2/STAT5 activation suppressed CCL1 but NOT CCL7 expression, demonstrating that CCL7 transcription is MAPK-dependent but STAT5-independent in fibroblasts. |
Primary human dermal fibroblast stimulation with OSM, selective MAPK inhibitors, STAT transcription factor knockdown, tristetraprolin studies, mRNA stability assays |
Journal of immunology |
Medium |
18981157
|
| 2014 |
PAR1 antagonism reduces acute LPS-induced neutrophilic lung inflammation by suppressing CCL2 and CCL7 expression (but not CXCL1/CXCL2 or TNF/IL-6); antibody neutralization of both CCL2 and CCL7 reduced LPS-induced leukocyte and neutrophil accumulation; CCL7 was localized by IHC specifically to pulmonary epithelium; intranasal recombinant CCL7 alone recruited neutrophils to airspaces; lung neutrophils had increased CCR1/CCR2 and decreased CXCR2 compared to circulating neutrophils. |
Mouse LPS lung inflammation model, PAR1 antagonist treatment, antibody neutralization of CCL2/CCL7, IHC for cellular source, intranasal recombinant CCL7 administration, flow cytometry for chemokine receptor expression on neutrophils |
American journal of respiratory cell and molecular biology |
High |
23972264
|
| 2016 |
CCL7 in psoriatic lesional skin is markedly upregulated compared to other chemokines; keratinocytes and dermal blood endothelial cells are its cellular sources; CCL7 blockade in imiquimod-induced psoriasis-like mouse model reduced myeloid inflammation and key cytokines (CCL20, IL-12p40, IL-17C) and increased IL-4; TNF-α blocker infliximab downregulated CCL7 within 16 hours in human lesional skin, placing CCL7 downstream of TNF-α in Th1/Th17 inflammation. |
Quantitative RT-PCR in human skin biopsies, imiquimod mouse model with CCL7 blockade, infliximab human clinical sample analysis, cytokine profiling |
Experimental dermatology |
Medium |
25828150
|