| 2004 |
CXCL14 (BRAK) is a potent inhibitor of angiogenesis in vivo (rat corneal micropocket assay) and blocks endothelial cell chemotaxis at ~1 nM in vitro; human immature monocyte-derived dendritic cells (iDCs) bind CXCL14 with high affinity (Kd ~2 nM) and CXCL14 is chemotactic for iDCs at 1–10 nM. |
Rat corneal micropocket angiogenesis assay, in vitro endothelial cell chemotaxis assay, radioligand binding assay (iDC), transwell chemotaxis assay |
Cancer research |
High |
15548693
|
| 2001 |
CXCL14 (BRAK) is a selective chemoattractant for monocytes (not other blood leukocytes, monocyte-derived DCs, or macrophages); the chemotactic response is pertussis toxin-sensitive (Gi-coupled) and is enhanced by cAMP-elevating agents (PGE2, forskolin), indicating receptor coupling to a Gi protein. |
Transwell migration assay, Ca2+ mobilization assay with pertussis toxin inhibition, cell-type specificity panel |
The Journal of experimental medicine |
High |
11561000
|
| 2005 |
CXCL14 attracts dendritic cells in vitro and promotes their infiltration into tumors in vivo; CXCL14 upregulates DC maturation markers, enhances allogeneic T cell proliferation in MLR, and activates NF-κB in DCs. |
Transwell chemotaxis assay, chimeric animal model DC infiltration, DC maturation marker FACS, MLR, NF-κB reporter assay |
Journal of immunology |
High |
15843547
|
| 2005 |
Cutaneous CXCL14 produced constitutively in healthy epidermis attracts CD14+ DC precursors (from CD34+ progenitors or blood), directs their suprabasal positioning in epidermal equivalents, promotes their survival, and drives their differentiation into Langerhans cell-like cells with antigen-presentation function. |
Transwell migration assay, 3D human epidermal equivalent tissue model, FACS phenotyping, antigen presentation functional assay |
Immunity |
High |
16169505
|
| 2006 |
CXCL14 stimulates migration of activated human NK cells and an NK leukemia cell line (NKL); this chemotactic effect is blocked by anti-CXCL14 antisera or pertussis toxin, indicating Gi-coupled receptor signaling, but CXCL14 does not affect NK cell proliferation or cytotoxic activity. |
Transwell chemotaxis assay, pertussis toxin inhibition, antisera neutralization |
Experimental hematology |
Medium |
16863917
|
| 2006 |
CXCL14 protein stability in cancer cell lines is regulated by the 26S proteasome via polyubiquitylation; a unique five-amino-acid insertion (41VSRYR45) not found in other CXC chemokines mediates proteasomal targeting, as shown by NMR structure determination and deletion/substitution mutagenesis. |
NMR structure determination, site-directed mutagenesis, proteasome inhibitor assays, ubiquitylation assay |
Journal of molecular biology |
High |
16987528
|
| 2008 |
Loss of RhoBTB2 (DBC2) in primary human epithelial cells by RNA interference leads to downregulation of CXCL14 mRNA and protein secretion; reintroduction of RhoBTB2 into HNSCC cell lines lacking CXCL14 restores CXCL14 secretion, placing RhoBTB2 upstream of CXCL14 expression. |
RNAi knockdown, microarray expression analysis, RT-PCR, CXCL14 protein secretion measurement, RhoBTB2 re-expression |
Oncogene |
Medium |
18762809
|
| 2009 |
CXCL14 upregulation by reactive oxygen species via the AP-1 signaling pathway promotes breast cancer cell motility by elevating cytosolic Ca2+ through binding to the inositol 1,4,5-trisphosphate receptor (IP3R) on the endoplasmic reticulum; decoy-mediated abrogation of CXCL14 suppresses motility and invasion. |
Microarray, gene knockdown (decoy), Ca2+ imaging, AP-1 reporter assay, invasion assay |
Cancer research |
Medium |
19276362
|
| 2009 |
CXCL14 inhibits trophoblast invasion and migration in vitro by suppressing MMP-2 and MMP-9 (gelatinase) activities, without affecting proliferation; CXCL14 binds specifically to trophoblast cells but not decidual cells at the maternal-fetal interface. |
Villous explant Matrigel invasion assay, transwell invasion/migration assay, gelatinase zymography, cell-specific binding assay |
Endocrinology |
Medium |
19833716
|
| 2010 |
Loss of CXCL14 expression in prostate cancer cells is caused by CpG island hypermethylation of the CXCL14 promoter; demethylation with 5-aza-2'-deoxycytidine restores CXCL14 mRNA/protein and produces functionally active DC chemoattractant in conditioned medium, confirmed by affinity chromatography depletion. |
MSP, bisulfite sequencing, RT-PCR, Western blot, 5-aza-dC treatment, DC chemotaxis assay, affinity chromatography depletion |
Cancer research |
High |
20460540
|
| 2010 |
CXCL14 expression in HNSCC cells is suppressed by ROS (H2O2, hydroxyl radical) via the EGFR/MEK/ERK pathway, as shown by attenuation with NAC, EGFR inhibitors, and MEK inhibitors. |
ROS treatment, RT-PCR, pharmacological inhibitors (NAC, EGFR inhibitor, MEK inhibitor) |
Free radical research |
Medium |
20815772
|
| 2011 |
In the adult mouse dentate gyrus, CXCL14 is expressed by GABAergic interneurons and inhibits GABAergic synaptic transmission (both tonic and phasic GABA) to nestin-EGFP+ neural stem/progenitor cells; CXCL14 also raises [Ca2+]i in cultured neural stem cells, indicating they express the CXCL14 receptor. CXCL12 has the opposite effect on GABA transmission at the same synapses. |
Immunohistochemistry, electrophysiology (whole-cell patch clamp in brain slices), Ca2+ imaging in cultured neural stem cells |
Journal of neurochemistry |
High |
21955359
|
| 2013 |
CXCL14 specifically binds CXCR4 with high affinity and inhibits CXCL12-mediated chemotaxis of human leukemia-derived cell lines and CD34+ hematopoietic progenitor cells; the mechanism involves CXCR4 internalization/inactivation rather than direct competition with CXCL12 for the binding site. |
Radioligand binding assay, transwell chemotaxis assay, CXCR4 internalization assay, competitive binding |
FEBS letters |
High |
23669361
|
| 2013 |
The C-terminal 51–77 amino acid residues of CXCL14 are responsible for CXCR4 binding; a disulfide dimer peptide of CXCL14(51-77) binds CXCR4 with affinity comparable to full-length CXCL14, induces CXCR4 internalization, and inhibits CXCL12-mediated signaling. |
Binding assay, CXCR4 internalization assay, chemotaxis inhibition, peptide mutagenesis/truncation |
FEBS letters |
Medium |
24161674
|
| 2013 |
CXCL14 restores CXCL14 expression suppressed by HPV E7 through epigenetic (DNA hypermethylation) mechanisms; restoration of Cxcl14 in HPV+ mouse oropharyngeal cancer clears tumors in immunocompetent but not Rag1-deficient mice, and increases NK, CD4+, and CD8+ T cell infiltration into tumor-draining lymph nodes via chemotaxis. |
Gene expression analysis, promoter methylation assay, syngeneic mouse tumor model, Rag1 KO mice, transwell migration assay, flow cytometry |
mBio |
High |
27143385
|
| 2014 |
CXCL14 does not directly modulate CXCR4 signaling: in CXCR4-transfected HEK293 and Jurkat T cells, CXCL14 had no effect on CXCL12-induced CXCR4 phosphorylation, G protein-mediated Ca2+ mobilization, ERK1/2 phosphorylation, dynamic mass redistribution, or CXCR4 internalization, suggesting CXCL14–CXCL12 pathway interactions require an unidentified CXCL14 receptor. |
CXCR4-transfected cell assays, Ca2+ mobilization, dynamic mass redistribution, ERK phosphorylation, receptor internalization |
FEBS letters |
High |
25451233
|
| 2015 |
IRX1 overexpression driven by promoter hypomethylation upregulates CXCL14/NF-κB signaling to promote osteosarcoma cell migration, invasion, anoikis resistance, and lung metastasis in murine models; IRX1 modulation epistasis places IRX1 upstream of CXCL14 in this pathway. |
MeDIP microarray, overexpression/knockdown, migration/invasion assay, anoikis assay, murine metastasis model, NF-κB reporter |
The Journal of clinical investigation |
High |
25822025
|
| 2015 |
In CXCL14 transgenic mice, NK cell activity (depleted with anti-asialo-GM1 antibody) is required for CXCL14-mediated suppression of tumor growth and metastasis, demonstrating that CXCL14 acts through NK cells to suppress tumors in vivo. |
CXCL14 transgenic mice, NK cell depletion (anti-asialo-GM1 antibody), tumor xenograft and metastasis assays |
Scientific reports |
High |
25765541
|
| 2016 |
HPV oncoprotein E7 induces CXCL14 promoter DNA hypermethylation, suppressing CXCL14 expression in HPV-positive head/neck and cervical cancers; this mechanism is E7-dependent and leads to reduced antitumor immune surveillance. |
Promoter methylation assay, E7 knockdown/overexpression, gene expression analysis, patient tissue specimens |
mBio |
High |
27143385
|
| 2017 |
CXCL14 acts as a positive allosteric modulator of CXCR4: it binds CXCR4 with high affinity and induces cell-surface CXCR4 redistribution, but does not itself trigger chemotaxis, Ca2+ mobilization, ERK1/2, or Rac1 signaling in CXCR4+ cells; it synergizes with subactive concentrations of CXCL12 to produce supramaximal chemotaxis and enhances HIV-1 infection by >3-fold. |
Chemotaxis assay, Ca2+ mobilization, ERK/Rac1 phosphorylation, CXCR4 redistribution (confocal), HIV-1 infection assay, competitive binding |
FASEB journal |
High |
28360196
|
| 2017 |
CXCL14 upregulates STAR expression and progesterone synthesis in human luteinized granulosa (hGL) cells via CREB phosphorylation downstream of p38 and JNK pathways; p38 and JNK inhibitors attenuate CXCL14-induced STAR expression and progesterone production. |
Primary hGL cell culture, CXCL14 treatment, Western blot (CREB phosphorylation, STAR), CREB inhibitor, p38/JNK inhibitors, progesterone ELISA |
Translational research |
Medium |
33129993
|
| 2017 |
HIF-1α directly binds the CXCL14 promoter and drives hypoxia/ischemia-dependent CXCL14 expression in the brain; CXCL14 promotes adhesion, migration, and homing of circulating CD11c+ iDCs to ischemic tissue via upregulation of PrPC, PECAM-1, and MMPs; accumulated iDCs then secrete IL-2 to promote Treg differentiation and reduce infarct volume. |
ChIP assay (HIF-1α on CXCL14 promoter), flow cytometry, migration/adhesion assays, CXCL14 depletion/supplementation in stroke mouse model, Treg differentiation assay |
Theranostics |
Medium |
28382159
|
| 2017 |
Cxcl14 depletion in myoblasts promotes cell cycle withdrawal in an ERK1/2-dependent manner, accelerating myogenic differentiation in vitro; in vivo, Cxcl14 knockout mice show accelerated muscle regeneration after injury, with reduced cell proliferation, and impaired regeneration in aged mice is fully restored by Cxcl14 depletion. |
siRNA knockdown, ERK1/2 inhibition, differentiation assays, BrdU incorporation, murine muscle injury/regeneration model |
NPJ Regenerative medicine |
Medium |
28775895
|
| 2019 |
Fibroblast-derived CXCL14 stimulates breast cancer epithelial-to-mesenchymal transition (EMT), migration, invasion, and lung colonization; the atypical chemokine receptor ACKR2 mediates these CXCL14-stimulated responses, and downregulation of ACKR2 or CXCL14-induced NOS1 attenuates pro-EMT and migratory effects. |
Co-culture with CXCL14-overexpressing fibroblasts, ACKR2 loss-of-function (siRNA/shRNA), invasion/migration assays, xenograft and tail-vein metastasis models, NOS1 inhibition |
Clinical cancer research |
High |
30850359
|
| 2019 |
CXCL14 expression restores MHC class I (MHC-I) expression on HPV-positive head and neck cancer cells downregulated by HPV; MHC-I knockdown abolishes CXCL14-mediated tumor suppression; CD8+ T cell-receptor transgenic experiments show that CXCL14-mediated antitumor CD8+ T cell responses require antigen specificity. |
MHC-I knockdown, CD8+ T cell depletion, TCR transgenic mouse model, tumor growth assays in immunocompetent syngeneic mice |
Oncogene |
High |
31417179
|
| 2019 |
NMR spectroscopy and computational modeling show that CXCL14 interacts with glycosaminoglycans (GAGs) with distinct binding modes depending on GAG sulfation pattern (heparin, hyaluronic acid, chondroitin sulfate-A/C/D, dermatan sulfate), with specificity beyond simple electrostatic interactions. |
NMR spectroscopy, microscale thermophoresis, heparin affinity chromatography, molecular docking, molecular dynamics simulations, free energy calculations |
Glycobiology |
High |
31264681
|
| 2019 |
In the embryonic mouse brain, H2A.Z.2 in neural progenitor cells recruits G9a to the Cxcl14 promoter, promoting H3K9me2 modification to repress Cxcl14 transcription; conditional deletion of H2A.Z.2 in NPCs leads to increased Cxcl14 expression and abnormal accumulation of microglia in the ventricular zone. |
Conditional knockout (NPC-specific H2A.Z.2 deletion), ChIP assay (H2A.Z.2, G9a, H3K9me2 at Cxcl14 promoter), immunohistochemistry, flow cytometry |
Proceedings of the National Academy of Sciences of the United States of America |
High |
31712428
|
| 2020 |
CXCL14 preferentially synergizes with homeostatic chemokine receptor systems (CXCR4/CXCL12, CXCR5/CXCL13, CCR7/CCL19/CCL21) but not efficiently with inflammatory chemokines (CXCR3, CCR5); CXCL14 itself does not activate any known conventional or atypical chemokine receptor in β-arrestin recruitment or chemotaxis assays; CXCL14 binds to 300-19 cells and interferes with CCL19 binding to CCR7, suggesting receptor-surface interactions underlie synergy. |
Chemotaxis assay, β-arrestin recruitment assay, Ca2+ flux, competitive binding (CCL19/CCR7) |
Frontiers in immunology |
High |
33123134
|
| 2020 |
NFATc2 binds the CXCL14 promoter region (identified by ChIP-seq) in the spinal dorsal horn after paclitaxel treatment; NFATc2 interaction with p300 increases histone H4 acetylation at the CXCL14 promoter, epigenetically upregulating CXCL14 expression and contributing to mechanical allodynia; NFATc2 and CXCL14 knockdown both attenuate paclitaxel-induced pain. |
ChIP-seq, ChIP (NFATc2, p300, H4 acetylation), siRNA knockdown, microarray, behavioral pain testing |
Journal of neuroinflammation |
High |
33070779
|
| 2020 |
Malignant cell-specific (not fibroblast or non-malignant cell) CXCL14 expression reduces oral squamous cell carcinoma tumor growth and increases tumor-infiltrating T lymphocytes in immunocompetent mice; CXCL14 knockdown reduces TILs and increases tumor growth, while overexpression has the opposite effect; both effects are abrogated by T cell depletion. |
shRNA knockdown, overexpression, syngeneic immunocompetent murine model, T cell depletion, flow cytometry, scRNA-seq |
Journal for immunotherapy of cancer |
High |
32958684
|
| 2021 |
CXCL14 directly interacts with CXCR4 on platelets (verified by immunoprecipitation and confocal microscopy) and mediates platelet migration via CXCR4; CXCL14-deficient platelets show reduced thrombus formation under flow that is restored by recombinant CXCL14; CXCR4-deficient murine platelets and human iPSC-derived CXCR4-KO platelets do not respond to CXCL14-mediated migration. |
Co-immunoprecipitation, confocal microscopy, flow chamber thrombus assay, CXCL14-KO mouse platelets, CXCR4-KO mouse/iPSC-derived platelets, migration assay |
Cardiovascular research |
High |
32239134
|
| 2023 |
Brg1 transcriptionally activates CXCL14 expression in hepatocytes during alcoholic liver disease; Brg1 deficiency reduces CXCL14 and hepatic Ly6G+ neutrophil infiltration; CXCL14 knockdown alleviates and CXCL14 overexpression enhances ALD; pharmacological Brg1 inhibition (PFI-3) or CXCL14 receptor antagonism ameliorates ALD pathogenesis. |
RNA-seq, Brg1 KO/overexpression, CXCL14 KO/OE in mice, flow cytometry (neutrophils), PFI-3 pharmacological inhibition, CXCL14 receptor antagonist |
EMBO molecular medicine |
High |
36722664
|
| 2023 |
CXCL14 promotes non-small cell lung cancer metastasis via ACKR2; ACKR2 knockdown abolishes CXCL14-induced cancer cell motility; ACKR2 mediates CXCL14-triggered PLCβ3/PKCα/c-Src signaling, leading to NF-κB activation, EMT marker upregulation, and lung metastasis in an orthotopic model. |
ACKR2 siRNA knockdown, migration/wound healing assays, luciferase NF-κB reporter, Western blot (PLCβ3, PKCα, c-Src, EMT markers), orthotopic lung cancer model |
International journal of biological sciences |
Medium |
37056937
|
| 2023 |
In chronic myeloid leukemia, restoration of CXCL14 (lost from the BM niche) inhibits CML leukemia-initiating stem cell (LSC) maintenance and sensitizes LSCs to imatinib in vitro; in vivo, CXCL14 dramatically inhibits CML engraftment in patient-derived xenograft (PDX) NSG-SGM3 mice; mechanistically, CXCL14 upregulates inflammatory cytokine signaling but downregulates mTOR signaling and oxidative phosphorylation in CML LSCs. |
Long-term culture initiating cell assay, RNA-seq, CXCL14 treatment in vitro, PDX mouse model, pathway analysis (mTOR, oxidative phosphorylation) |
Blood |
Medium |
37018663
|
| 2024 |
CXCL14 binds to integrin α11β1 on fibroblasts, activating actomyosin contractility and matrix remodeling; CXCL14-stimulated fibroblasts produce TGFβ, which increases osteosarcoma invasion and migration; anti-CXCL14/integrin α11β1 antibodies inhibit fibroblast TGFβ production, enhance CD8+ T cell antitumor immunity, and suppress osteosarcoma lung metastasis. |
scRNA-seq, Co-IP/binding assay (CXCL14–integrin α11β1), actomyosin contractility assay, TGFβ ELISA, CD8+ T cell assay, anti-CXCL14/integrin mAb in vivo, metastasis model |
Cancer research |
High |
38295227
|
| 2024 |
CXCL14 is a potent and selective activator of the orphan GPCR MRGPRX2 (and mouse ortholog MRGPRB2); activation involves G protein-dependent signaling and β-arrestin recruitment; C-terminal domain sequences of CXCL14 (4–11 amino acids) have similar or greater potency than the full 77-amino acid protein at MRGPRX2, as established by mutagenesis and computational docking. |
GPCR panel screening (G protein signaling, β-arrestin recruitment assays), MRGPRX2/B2 antagonist inhibition, truncation/mutagenesis of CXCL14, computational docking |
Communications biology |
High |
38184723
|
| 2024 |
p21+ perinecrotic hepatocytes secrete CXCL14 after severe APAP overdose; CXCL14-neutralizing antibody treatment greatly enhances liver recovery and reduces acute liver failure, while targeting p21+ senescent hepatocytes with senolytics (dasatinib/quercetin) has no effect, establishing CXCL14 secretion (not cellular senescence per se) as the critical pathogenic mechanism. |
Single-nuclei RNA-seq, spatial transcriptomics, CXCL14 neutralizing antibody, senolytic treatment, liver injury biochemical markers, mouse APAP overdose model |
Toxicology |
High |
38614205
|