| 1996 |
CXCL9 (Mig) signals through the CXCR3 receptor, a G-protein coupled receptor selectively expressed on IL-2-activated T lymphocytes; binding mediates Ca2+ mobilization and chemotaxis specifically in activated T cells but not in resting T cells, B cells, monocytes, or granulocytes. |
Receptor cloning, Ca2+ flux assay, chemotaxis assay, expression profiling by Northern/flow cytometry |
The Journal of experimental medicine |
High |
9064356
|
| 1995 |
Recombinant human CXCL9 (Mig) induces transient elevation of intracellular Ca2+ and is chemotactic for activated T lymphocytes and tumor-infiltrating lymphocytes, but not for neutrophils or monocytes; secreted CXCL9 exists as multiple species due to proteolytic cleavage at basic carboxy-terminal residues occurring intracellularly before secretion, and carboxy-terminal truncation reduces specific activity. |
CHO cell expression/purification, Ca2+ flux assay, modified Boyden chamber chemotaxis assay, SDS-PAGE, N-terminal sequencing |
The Journal of experimental medicine |
High |
7595201
|
| 1993 |
CXCL9 (HuMig) is induced in human monocytic cells (THP-1) and peripheral blood mononuclear cells by IFN-γ but not by IFN-α or LPS, establishing IFN-γ as the primary transcriptional inducer. |
cDNA library screening, Northern blot, cytokine stimulation assays |
Biochemical and biophysical research communications |
Medium |
8476424
|
| 1997 |
CXCL9 and IP-10/CXCL10 share the CXCR3 receptor, show reciprocal desensitization on activated T cells, inhibit neovascularization, inhibit hematopoietic progenitor cells, and exert anti-tumor effects in vitro and in vivo. |
Receptor cross-desensitization assay, in vitro angiogenesis inhibition assay, in vivo tumor models |
Journal of leukocyte biology |
Medium |
9060447
|
| 2009 |
CXCL9 exerts direct antifibrotic effects on human hepatic stellate cells (LX-2) by suppressing collagen production; CXCR3-deficient mice show increased liver fibrosis associated with decreased intrahepatic IFN-γ-positive T cells and reduced IFN-γ mRNA, indicating that CXCL9-CXCR3 regulates Th1-associated antifibrotic immune pathways in the liver. |
In vitro stellate cell stimulation (collagen production assay), CXCR3 knockout mouse model of liver fibrosis, intrahepatic immune cell subset analysis, IFN-γ mRNA measurement |
Gastroenterology |
High |
19344719
|
| 2016 |
Osteoblast-secreted CXCL9 acts as an angiostatic factor by interacting with VEGF and preventing its binding to endothelial cells and osteoblasts, thereby abrogating angiogenesis and osteogenesis in bone marrow; mTORC1 activates CXCL9 expression in osteoblasts by transcriptional upregulation of STAT1, which increases STAT1 binding to the Cxcl9 promoter. |
Mouse bone marrow model, in vitro VEGF binding competition assay, STAT1 ChIP assay, mTORC1 signaling inhibition |
Nature communications |
High |
27966526
|
| 2002 |
CXCL9 (MIG) plays a functionally required role in CD4+ T lymphocyte recruitment in cardiac allograft vasculopathy (CAV); macrophages (MOMA-2+) are the predominant source of CXCL9 in this context, and antibody neutralization of CXCL9 significantly reduces CD4+ T cell infiltration and intimal thickening. |
MHC II-mismatched murine cardiac transplant model, antibody neutralization, immunohistochemistry, gene expression profiling |
The American journal of pathology |
High |
12368204
|
| 2003 |
CXCL9 (MIG) and CXCL10 (IP-10) are required for SLC/CCL21-mediated antitumor responses; in vivo depletion of either chemokine reduces antitumor efficacy, CXCR3+ T cell frequency, and CD11c+ DC accumulation at the tumor site, revealing interdependence among IFN-γ, CXCL9, and CXCL10 in antitumor immunity. |
In vivo antibody depletion/neutralization, flow cytometry, cytokine/chemokine measurement at tumor site |
Molecular cancer |
Medium |
12740040
|
| 2009 |
Hepatitis B virus HBx protein induces CXCL9 (MIG) expression in a dose-dependent manner via direct NF-κB binding to the MIG promoter at position -147, as demonstrated by luciferase reporter, ChIP, and EMSA; increased CXCL9 protein levels enhance migration of peripheral blood lymphocytes, an effect blocked by NF-κB inhibition. |
Luciferase reporter assay, chromatin immunoprecipitation (ChIP), electrophoretic mobility shift assay (EMSA), chemotaxis assay, NF-κB inhibition |
Virology |
High |
19157479
|
| 2002 |
In the virus-infected liver (adenovirus hepatitis model), IFN-γ induces CXCL9 (MIG) and IP-10 in hepatocytes; optimal induction requires a co-stimulatory signal from Fas cross-linking on hepatocytes; NK/T cells expressing NK1.1 and AsGM1 provide both signals; antibody-mediated ablation of NK/T cells inhibits IFN-γ and chemokine transcript induction. T cell (but not NK cell) chemotaxis by hepatocyte supernatants was abrogated by anti-Mig and anti-Crg-2 antibodies. |
Murine adenovirus hepatitis model, NK/T cell depletion, anti-Fas antibody injection, neutralizing antibody chemotaxis inhibition assay |
Cellular immunology |
Medium |
12473267
|
| 2002 |
IFN-γ plus TNF-α induces CXCL9 (MIG) expression in human mesangial cells; NO donors suppress this induction through cGMP-independent inhibition of NF-κB activation, as shown by EMSA. |
Primary human mesangial cell culture, cytokine stimulation, EMSA, NO donor treatment, immunostaining |
Journal of the American Society of Nephrology : JASN |
Medium |
11752021
|
| 1999 |
CXCL9 (MIG) and CXCL10 (IP-10), signaling through CXCR3 expressed on mesangial cells, directly induce proliferation of human mesangial cells, revealing a non-immune direct cellular effect of these chemokines. |
CXCR3 expression by flow cytometry, Ca2+ flux assay, cell proliferation assay with recombinant chemokines |
Journal of the American Society of Nephrology : JASN |
Medium |
10589690
|
| 2010 |
M. tuberculosis inhibits IFN-γ-induced CXCL9 (MIG) transcription by disrupting STAT1α binding to cis-regulatory elements in the MIG promoter, partially via NF-κB and p38 MAPK pathways; paradoxically, combined IFN-γ and MTB stimulation increases MIG protein through post-transcriptional mechanisms involving NF-κB and p38 MAPK. |
STAT1 EMSA on MIG promoter elements, kinase inhibitor studies, RT-PCR, ELISA protein measurement |
Tuberculosis (Edinburgh, Scotland) |
Medium |
21167783
|
| 2016 |
Progranulin (PGRN) inhibits TNF- and IFN-γ-induced CXCL9 and CXCL10 expression, and this inhibitory effect depends on TNFR1 signaling, as demonstrated by gene array analysis in PGRN-null mice and recombinant PGRN protein treatment experiments. |
Gene array on PGRN KO vs. WT CD4+ T cells, recombinant PGRN treatment, TNFR1-dependent rescue experiments, dermatitis model |
Scientific reports |
Medium |
26892362
|
| 2015 |
IL-27 induces CXCL9, CXCL10, and CXCL11 expression in hepatic cells in a STAT1-dependent manner; during ConA-induced hepatitis, IL-27 and IFN-γ cooperatively regulate CXCR3 ligand expression, with IFN-γ KO abolishing upregulation. |
In vitro cytokine stimulation (human hepatic cell lines and primary cells), in vivo ConA hepatitis model, IL-27 neutralization, IFN-γ KO mice, RT-PCR, ELISA |
Journal of molecular medicine (Berlin, Germany) |
Medium |
26199110
|
| 2019 |
Macrophages are the predominant cellular source of CXCL9 following dual PD-1/CTLA-4 immune checkpoint blockade; macrophage depletion abrogates CD8+ T cell infiltration and therapeutic efficacy, establishing macrophage-derived CXCL9 as functionally required for ICB antitumor responses. |
NanoString analysis, flow cytometry, cytometric bead array, antibody depletion, single-cell RNA-seq, murine tumor models |
Clinical cancer research |
High |
31636098
|
| 2022 |
CXCL9 directly induces Col1a1 (collagen type I) mRNA expression in murine fibroblasts via CXCR3; fibrosis in a bleomycin skin model is dependent on CXCL9 and CXCR3 (not CXCL10), as shown by chemokine- and receptor-deficient mouse experiments. |
Cxcl9-KO, Cxcl10-KO, Cxcr3-KO mouse bleomycin fibrosis model, recombinant CXCL9 stimulation of fibroblasts, Col1a1 mRNA quantification, REX3 reporter mice |
The Journal of investigative dermatology |
High |
36708947
|
| 2022 |
CXCL9 promotes Th17 cell proliferation and skews the Treg/Th17 balance toward Th17 in a JNK-dependent manner; AAV-mediated silencing of CXCL9 in a murine MASH model reduces Th17 frequency and phospho-JNK levels, while CXCL9 overexpression has the opposite effect. |
Recombinant adeno-associated virus gene transfer/silencing, T cell differentiation assays, phospho-JNK western blot, JNK inhibitor experiments, murine MASH model |
Experimental cell research |
Medium |
34461107
|
| 2022 |
CXCL9 signaling through CXCR3 activates the JAK1/STAT2 pathway in triple-negative breast cancer cells; CXCL9 overexpression increases JAK1/STAT2 phosphorylation as shown by western blot. |
CXCL9 overexpression in MDA-MB-231 cells, western blot for JAK1/STAT2 phosphorylation |
Cancer immunology, immunotherapy : CII |
Low |
36472587
|
| 2018 |
CXCL9/10/11 signaling through CXCR3 upregulates PD-L1 expression in gastric cancer cells by activating STAT3 and Akt (PI3K-Akt) pathways; blocking CXCR3 signaling abolishes PD-L1 upregulation and phosphorylation of STAT3 and Akt. |
Western blot, gastric cancer cell line treatment with recombinant CXCL9/10/11, CXCR3 blocking, in vivo tumor experiments |
BMC cancer |
Medium |
29690901
|
| 2022 |
CXCL9 overexpression in murine ovarian cancer (ID8) models results in T-cell accumulation, delayed ascites formation, and improved survival dependent on adaptive immune function; in ICB-resistant models, CXCL9 is sufficient to enable successful anti-PD-L1 therapy. |
Murine ovarian cancer models with CXCL9 overexpression, immune depletion experiments, survival analysis, flow cytometry |
British journal of cancer |
Medium |
35314795
|
| 2022 |
CXCL9 inhibits collagen deposition in human pulmonary arterial smooth muscle cells (hPASMCs) via CXCR3, and pharmacological NKT cell activation restores CXCL9 production and ameliorates vascular remodeling in a mouse PH/fibrosis model via the STAT1-CXCL9-CXCR3 axis; CXCL10 did not share this antifibrotic effect. |
NKT cell coculture with hPASMCs, secretome analysis, CXCL9 recombinant protein treatment, CXCR3 inhibition, murine PH/fibrosis model with pharmacological NKT activation (KRN7000) |
American journal of respiratory and critical care medicine |
Medium |
35763380
|
| 2016 |
Prostaglandin E2 (a COX metabolite) acts as a negative regulator of CXCL9 secretion in ovarian cancer cell lines, while COX inhibition by indomethacin (but not celecoxib) significantly upregulates CXCL9; celecoxib suppresses NF-κB activation and inhibits CXCL9 release. |
Ovarian cancer cell line treatment with PGE2 and COX inhibitors, ELISA for CXCL9/CXCL10, NF-κB activation assay |
British journal of cancer |
Medium |
27490802
|
| 2024 |
DPP-4 cleaves the two N-terminal amino acids of CXCL9, converting it into a CXCR3 competitive antagonist that retains binding but loses receptor activation; adding an N-terminal glutamine residue to CXCL9-Fc renders it a fully active CXCR3 agonist resistant to DPP-4 cleavage, as demonstrated by biochemical analysis and computational modeling. |
Biochemical DPP-4 cleavage assay, CXCR3 binding and activation assays, computational modeling, engineering of N-terminal glutamine variant |
Proceedings of the National Academy of Sciences of the United States of America |
High |
40238455
|
| 2012 |
IFN-γ-mediated immune stress imposed by T cells drives tumor cells to epigenetically lose CXCL9/Mig expression (immunoediting); Mig-deficient tumor variants show increased resistance to T cell-mediated immunity; CXCL10 expression does not compensate for absent CXCL9 antitumor function, indicating a non-redundant role for CXCL9. |
Methylcholanthrene-induced fibrosarcoma and melanoma models, in vivo T cell and IFN-γ immune stress experiments, chemokine expression analysis, tumor growth assays |
Journal of immunology (Baltimore, Md. : 1950) |
Medium |
23241877
|
| 2019 |
Glucocorticoids suppress CXCL9 and CXCL10 expression directly in renal tubular epithelial cells (not in T cells), resulting in reduced CXCR3+CD4+ T cell recruitment to the inflamed kidney; this CXCL9/CXCL10-CXCR3 axis was identified as a target of glucocorticoid-mediated protection in crescentic glomerulonephritis. |
In vitro glucocorticoid treatment of renal tubular cells, experimental mouse crescentic glomerulonephritis model, single-cell analysis of kidney biopsies, T cell recruitment assays |
JCI insight |
Medium |
36355429
|
| 2019 |
Cxcl9 secreted by osteoblasts during osteogenic differentiation in MSC co-cultures inhibits angiogenesis by suppressing VEGF binding to endothelial cells; mTOR/STAT1 signaling activates Cxcl9 in osteoblasts; blocking this pathway with rapamycin reduces Cxcl9 and restores angiogenesis. |
MSC-HUVEC co-culture, VEGF binding assay, mTOR/STAT1 inhibition with rapamycin, Cxcl9 knockdown |
Archives of biochemistry and biophysics |
Medium |
31550444
|
| 2024 |
CXCL9, CXCL10, and CCL19 are synergistically required for T cell (CD8+) recruitment in lichen planus; keratinocytes and fibroblasts in LP lesions are identified as cellular sources; an in vitro migration assay demonstrated synergistic enhancement of CD8+ T cell recruitment by CCL19 combined with CXCL9 or CXCL10 beyond any individual cytokine. |
scRNA-seq on blood and skin, in vitro T cell migration assay with primary human T cells and recombinant cytokines |
JCI insight |
Medium |
39190494
|
| 2024 |
LIF (leukemia inhibitory factor) induced by HPV E6/E7 via NFκB suppresses CXCL9 expression in tumor-associated macrophages; LIF blockade promotes CXCL9 induction and CD8+ T cell infiltration, sensitizing tumors to immune checkpoint inhibitors. |
Primary pDC and macrophage cultures, LIF blockade experiments, syngeneic animal models, patient-derived models, flow cytometry for CD8+ T cells |
Clinical cancer research |
Medium |
39078728
|
| 2024 |
HIF-1α suppresses CXCL9 (and CXCL10, CXCL11) expression in colorectal cancer; HIF-1α knockdown or overexpression respectively increases or decreases these chemokines in vitro; in vivo BIRC2/HIF-1α inhibition promotes CD8+ T cell infiltration via the CXCL9/CXCL10/CXCL11-CXCR3 axis, and this is reversed by CXCR3 neutralization. |
HIF-1α knockdown/overexpression in CRC cell lines, CXCR3 neutralizing antibody in vivo, xenograft/syngeneic mouse models, flow cytometry |
Biomedicine & pharmacotherapy |
Medium |
38484558
|
| 2024 |
EZH2 in tumor cells suppresses CXCL9 expression by repressing NF-κB-mediated CXCL9 transcriptional activation; EZH2 targeting restores CXCL9 expression and enhances CD8+ T cell infiltration into the tumor microenvironment of esophageal squamous cell carcinoma. |
EZH2 KD/inhibition, NF-κB pathway analysis, CXCL9 promoter regulation, CD8+ T cell infiltration assays in vivo and in vitro |
Communications biology |
Medium |
39702756
|
| 2016 |
CXCL9 has direct antimicrobial activity against Streptococcus sanguinis and E. coli as demonstrated by radial diffusion assay; CXCL9 mRNA is absent in unstimulated oral keratinocytes but strongly induced by IFN-γ, whereas CXCL10 is constitutively expressed and enhanced by LPS. |
Radial diffusion antimicrobial assay, mRNA expression profiling by PCR with various stimuli (IFN-γ, LPS) |
European journal of oral sciences |
Medium |
27671889
|