| 2009 |
B7-H6 (NCR3LG1) is a direct cell-surface ligand for the activating NK cell receptor NKp30, binding to NKp30 and triggering NKp30-mediated NK cell cytotoxicity and cytokine secretion; B7-H6 is not detected on normal tissues but is expressed on tumor cells. |
Protein binding assays, functional NK cell activation assays (cytotoxicity and cytokine secretion), flow cytometry, and expression profiling of tumor vs. normal tissues |
The Journal of experimental medicine |
High |
19528259
|
| 2011 |
Crystal structure of NKp30 in complex with B7-H6 revealed that NKp30 engages B7-H6 using both front and back β-sheets of its Ig-like domain (binding via the side and face of the β-sandwich), while B7-H6 contacts NKp30 through the CDR-like loops of its V-like domain in an antibody-like interaction distinct from CTLA-4/B7 and PD-1/PD-L complexes. |
X-ray crystallography of NKp30–B7-H6 complex |
The Journal of experimental medicine |
High |
21422170
|
| 2014 |
B7-H6 ectodomain shedding from tumor cell surfaces is mediated by the metalloproteases ADAM10 and ADAM17, generating soluble B7-H6 that impairs NKp30-mediated NK cell activation; pharmacological inhibition or siRNA knockdown of ADAM10/17 increased surface B7-H6 and enhanced NK cell recognition. |
Pharmacological inhibitors of ADAM proteases, siRNA-mediated gene attenuation, flow cytometry, NK cell activation assays, ELISA for soluble B7-H6 in patient sera |
Cancer research |
High |
24780758
|
| 2013 |
B7-H6 expression is induced on CD14+CD16+ proinflammatory monocytes and neutrophils upon stimulation by TLR ligands or proinflammatory cytokines (IL-1β, TNF-α); in these conditions a soluble form is also produced, associated with membrane vesicles in the exosomal fraction. |
In vitro stimulation of primary monocytes/neutrophils, flow cytometry for surface B7-H6, ELISA for soluble B7-H6, exosome fractionation/sedimentation |
Blood |
High |
23687088
|
| 2013 |
B7-H6 mRNA and surface protein expression in tumor cells is regulated epigenetically through histone acetylation at the B7-H6 promoter; pan- or class I HDAC inhibitors (or siRNA knockdown of HDAC2/3) downregulate B7-H6, reducing histone acetylation at the promoter and decreasing NKp30-dependent NK effector functions. |
HDAC inhibitor treatment, siRNA knockdown of HDAC2/3, luciferase reporter assays, chromatin immunoprecipitation (ChIP), flow cytometry, NK cell functional assays |
Blood |
High |
23801635
|
| 2016 |
The proto-oncogene c-Myc (and N-Myc) directly drives B7-H6 transcription by binding a functional site in the B7-H6 promoter; pharmacological inhibition or siRNA/shRNA knockdown of c-Myc or N-Myc significantly decreases B7-H6 expression and impairs NKp30-mediated NK cell degranulation. |
Luciferase reporter assays, chromatin immunoprecipitation (ChIP), siRNA/shRNA knockdown of c-Myc/N-Myc, pharmacological inhibition, flow cytometry, NK cell degranulation assays |
Oncoimmunology |
High |
27622013
|
| 2016 |
Crystal structure of antibody 17B1.3 in complex with B7-H6 ectodomain at 2.5 Å resolution showed the antibody binds a site completely distinct from the NKp30-binding site on B7-H6; structure-based mutagenesis of potential B7-H6 dimerization sites did not diminish NKp30-mediated cell activation, indicating the antibody inhibits NK cell activation by sterically interfering with cell–cell contacts rather than directly blocking the NKp30–B7-H6 interaction. |
X-ray crystallography at 2.5 Å, structure-based site-directed mutagenesis, NK cell activation assays |
Journal of molecular biology |
High |
27663271
|
| 2017 |
Human cytomegalovirus (HCMV) upregulates B7-H6 expression following infection, but HCMV genes US18 and US20 downregulate B7-H6 surface expression via an endosomal degradation mechanism to evade NK cell recognition through NKp30. |
HCMV infection of cells, expression of individual viral genes (US18, US20), flow cytometry for surface B7-H6, NK cell killing assays, inhibitors of endosomal/lysosomal degradation |
Scientific reports |
High |
28819195
|
| 2015 |
Chronic engagement of NKp30 by surface or soluble B7-H6 on ovarian carcinoma cells leads to downregulation of NKp30 expression on tumor-associated NK cells, impairing their IFN-γ production and cytolytic function. |
Flow cytometry of tumor-associated NK cells from peritoneal fluids, functional cytotoxicity and cytokine assays, correlation with surface/soluble B7-H6 levels in peritoneal fluid |
Oncoimmunology |
Medium |
26137398
|
| 2015 |
Soluble B7-H6 in serum of high-risk neuroblastoma patients inhibits NK cell functions in vitro, correlating with NKp30 downregulation; NB cells expressing surface B7-H6 stimulate NK cells in an NKp30-dependent manner. |
In vitro NK cell functional assays with patient serum, NKp30-blocking antibodies, flow cytometry, ELISA for soluble B7-H6 |
Science translational medicine |
Medium |
25877893
|
| 2015 |
Tumor therapeutic stressors (cisplatin, 5-fluorouracil, radiation, heat shock, TNF-α) upregulate B7-H6 surface expression on tumor cells, enhancing their susceptibility to NKp30-mediated NK cell lysis; B7-H6 shRNA knockdown dampened this sensitization. |
Drug/radiation/heat-shock treatment of tumor cell lines, flow cytometry for B7-H6, NK cell cytotoxicity assays, shRNA knockdown |
The Journal of biological chemistry |
Medium |
26472927
|
| 2021 |
Soluble B7-H6 (sB7-H6) inhibits NK cell-mediated target cell killing and is associated with diminished cell surface expression of NKG2D and NCRs (NKp30, NKp46); in contrast to BAG6, B7-H6 is only marginally released in association with extracellular vesicles and EV-associated B7-H6 does not stimulate NK killing. |
Recombinant ligand production in HEK293 cells, NK cell killing assays, flow cytometry for receptor expression, nano flow cytometry of EVs, EV isolation and characterization |
International journal of molecular sciences |
Medium |
33671836
|
| 2021 |
BRD4, an epigenetic reader, activates B7-H6 transcription in AML cells: histone acetylation mediated by CBP30/P300 facilitates BRD4 binding to the B7-H6 promoter, which recruits P-TEFb to phosphorylate RNA polymerase II; BRD4 also co-binds with JMJD6 at a distal B7-H6 enhancer. Metformin reduces histone acetylation at the B7-H6 promoter, impairing BRD4 binding and inhibiting B7-H6 expression. |
BRD4-specific inhibition, ChIP for BRD4/histone acetylation/P-TEFb at B7-H6 promoter/enhancer, flow cytometry, RT-PCR, metformin treatment, B7-H6 knockdown apoptosis assays |
Oncoimmunology |
High |
33796404
|
| 2023 |
B7-H6 contains six functional N-linked glycosylation sites; N43 and N208 glycosylation are conserved in jawed vertebrates and are essential for NK cell activation. Mechanistically, N43 glycosylation contributes to B7-H6/NKp30 binding affinity, while N208 glycosylation is required for membrane stability (lack of N208 leads to B7-H6 shedding from the membrane). |
PNGase F digestion, tunicamycin blockage, single-site mutagenesis, SDS-PAGE/Western blot, flow cytometry, NK cell activation assays, phylogenetic and structural analysis |
Frontiers in immunology |
High |
38035117
|
| 2019 |
B7-H6 is strongly expressed on the surface of CD4+ T cells infected with HIV-2, and chronic NKp30 engagement by this surface B7-H6 leads to downregulation of NKp30 on NK cells, impairing their cytolytic function while increasing IFN-γ overproduction. |
Flow cytometry phenotyping of NK cells and target cells from HIV-2 patients, functional killing assays against B7-H6-expressing targets |
AIDS |
Medium |
30325780
|
| 2020 |
B7-H6 promotes tumor cell proliferation, migration, and invasion in non-Hodgkin lymphoma via the Ras/MEK/ERK signaling pathway; B7-H6 knockdown inhibited Ras/MEK/ERK phosphorylation, and MEK inhibitor AZD8330 reversed migration/invasion induced by B7-H6. |
B7-H6 knockdown and overexpression in NHL cell lines, quantitative phosphoproteomics, Western blot for Ras/MEK/ERK pathway, MEK inhibitor rescue, in vivo xenograft model, CCK-8 and Transwell assays |
OncoTargets and therapy |
Medium |
32606790
|
| 2020 |
B7-H6 preferentially expressed in glioma stem-like cells (GSLCs) promotes proliferation via the c-Myc/RNMT axis; B7-H6 knockdown decreased c-Myc expression, inhibited PI3K/Akt and ERK/MAPK signaling, and specifically reduced RNMT (RNA guanine-7 methyltransferase) expression among co-expressed genes. CRISPR-Cas9 knockout of B7-H6 in 293T cells also suppressed proliferation. |
siRNA knockdown, CRISPR-Cas9 knockout, Western blot for c-Myc/PI3K/Akt/ERK, TCGA co-expression analysis, flow cytometry, CCK-8 proliferation assays |
Journal of immunology research |
Medium |
32322592
|
| 2021 |
B7-H6 undergoes nuclear translocation in T-lymphoblastic lymphoma (T-LBL) cells, with a specific nuclear localization sequence identified in the C-terminus; B7-H6 depletion in Jurkat cells impaired proliferation, migration, and invasion, and RNA-seq revealed differential expression of RAG-1 as a potential downstream mediator. |
Immunohistochemistry showing nuclear localization, nuclear localization sequence analysis, B7-H6 depletion, RNA sequencing, functional cell assays |
Annals of translational medicine |
Medium |
33708955
|
| 2025 |
SNRPA promotes B7-H6 expression in hepatocellular carcinoma by directly binding B7-H6 pre-mRNA and facilitating its maturation through intron 2 splicing; SNRPA-driven B7-H6 upregulation activates the B7-H6–STAT3/AKT signaling axis, promoting G1-S transition and inhibiting apoptosis, and confers resistance to lenvatinib. |
Nanopore full-length cDNA sequencing, RNA-binding protein immunoprecipitation sequencing, RIP-PCR with exon-exon and exon-intron junction primers, gain/loss-of-function experiments, Western blot for STAT3/AKT, flow cytometry, drug sensitivity assays |
Bioscience trends |
Medium |
40240166
|
| 2021 |
B7-H6 knockdown in AML (HEL-R) cells induces apoptosis, and high B7-H6 expression in AML activates anti-apoptotic signaling; the BRD4–B7-H6 regulatory axis is linked to the STAT3 pathway activity in these cells. |
B7-H6 knockdown (siRNA), flow cytometry for apoptosis, Western blot, correlation with BRD4 inhibition |
Oncoimmunology |
Medium |
33796404
|
| 2015 |
NKp30-B7-H6 interaction in HBV-related acute-on-chronic liver failure leads to upregulation of IL-32 in NK cells; IL-32 in turn induces apoptosis of hepatocytes in a dose-dependent manner, establishing a mechanistic link between B7-H6 engagement and hepatocyte damage via IL-32. |
Co-culture of NK-92 cells with B7-H6-expressing hepatocytes, anti-NKp30 antibody stimulation, flow cytometry for IL-32 in NK cells, Annexin V/PI apoptosis assay of hepatocytes treated with IL-32, immunohistochemistry in patient liver samples |
PloS one |
Medium |
26241657
|
| 2021 |
atRA-induced downregulation of c-Myc reduces B7-H6 transcription in leukemia cells, rendering them resistant to NKp30/B7-H6-dependent NK cell killing; epigenetic modifications (DNA methylation, HDAC) were not responsible, as their inhibitors could not restore B7-H6 expression. |
CRISPR/Cas9 B7-H6 knockdown, siRNA c-Myc knockdown, atRA treatment, real-time PCR, flow cytometry, Western blot, NK cell cytotoxicity assays, HDAC/DNA methylation inhibitor controls |
Cancer communications |
Medium |
34236140
|
| 2024 |
CRISPR-mediated knockout of B7-H6 in CD4+ T cells reduced NK cell responses to HIV-1-infected cells, confirming the NKp30:B7-H6 receptor–ligand pair as functionally required for NK recognition of HIV-infected cells. |
CRISPR editing of CD4+ T cells to knockout B7-H6, NK cell functional assays, NKp30 overexpression in NK cells |
bioRxivpreprint |
Medium |
bio_10.1101_2024.06.24.600449
|
| 2023 |
B7-H6 promotes medulloblastoma cell migration and invasion by activating c-MYC expression, which in turn drives F-actin cytoskeletal rearrangement and upregulates MMP-2 and MMP-9. |
siRNA knockdown and plasmid overexpression of B7-H6, Transwell migration/invasion assays, Western blot for c-MYC/MMP-2/MMP-9, immunofluorescence staining for F-actin |
Medical oncology |
Low |
36692844
|
| 2025 |
G-CSF derived from gastric cancer tumors induces B7-H6 expression on neutrophils via NF-κB signaling pathway activation; B7-H6 on tumor-infiltrating neutrophils promotes their survival by blocking apoptosis, as B7-H6 blockade accelerated neutrophil apoptosis and shortened their lifespan. |
Flow cytometry phenotyping, in vitro neutrophil stimulation with G-CSF and tumor-conditioned supernatants, NF-κB pathway analysis, B7-H6 blockade with antibodies, apoptosis assays |
Neoplasia |
Medium |
40054066
|