| 2005 |
JAG2 and DLL1 act synergistically as Notch ligands to regulate hair cell differentiation in the cochlea, likely signaling through the NOTCH1 receptor; loss of both ligands causes supernumerary hair cells primarily through a cell fate switch rather than excess proliferation, and the Notch pathway also controls cellular proliferation in the organ of Corti. |
Genetic double-mutant analysis (Dll1/Jag2 double knockout mice), conditional inactivation of Notch1, in situ hybridization, cell fate tracing |
Development |
High |
16141228
|
| 2000 |
JAG2 activation of Notch in cochlear progenitor cells acts to suppress Math1 expression, possibly through induction of the downstream Notch target HES5, thereby controlling hair cell vs. supporting cell fate; Jag2 mutant cochleae show expanded Math1 expression and dramatically reduced HES5. |
In situ hybridization for Math1 and HES5 in wild-type vs. Jag2deltaDSL mutant cochleae |
Journal of the Association for Research in Otolaryngology |
Medium |
11545143
|
| 2004 |
JAG2 overexpression in malignant plasma cells induces secretion of IL-6, VEGF, and IGF-1 from stromal cells via Notch-1 signaling; this induction is blocked by anti-Notch-1 monoclonal antibodies targeting the JAG2-binding sequence of Notch-1. JAG2 overexpression is caused by hypomethylation of its promoter in myeloma cells. |
In vitro co-culture assay with anti-Notch-1 antibody blocking, methylation analysis, cytokine measurement |
Blood |
Medium |
15292061
|
| 2006 |
JAG2 signals through NOTCH1 in oral epithelium to drive periderm differentiation and prevent premature palatal adhesion; Jag2-deficient mice show attenuated Notch1 activation in oral periderm, disrupted periderm ultrastructure, and their tongue fuses to wild-type palatal shelves in recombinant explant culture. |
Genetic knockout, immunostaining for activated Notch1, ultrastructural analysis, recombinant explant co-culture |
Developmental Dynamics |
High |
16607638
|
| 2007 |
DeltaNp63 transcriptionally enhances Jag2 expression in thymic epithelial cells; p63-null thymi phenocopy Jag2-null thymi in showing reduced gamma-delta T cell formation, placing DeltaNp63 upstream of Jag2 in thymic development. |
Genetic complementation of p63-/- mice with TAp63alpha or DeltaNp63alpha transgenes, in vivo gene expression analysis, comparison of p63-/- and Jag2-/- thymic phenotypes |
PNAS |
Medium |
17626181
|
| 2009 |
Loss of the SMRT/NCoR2 corepressor in multiple myeloma leads to aberrant histone acetylation at the JAG2 promoter, causing JAG2 overexpression; restoration of SMRT function suppresses JAG2 and induces myeloma cell apoptosis. |
Chromatin analysis of JAG2 promoter acetylation, SMRT expression analysis in cell lines and patient samples, functional SMRT restoration experiments |
Cancer Research |
Medium |
19417136
|
| 2010 |
JAG2 is a direct transcriptional target of ectopic Myc in human B cells; Myc-driven JAG2 activates Notch signaling and promotes hypoxic cell proliferation and in vivo tumorigenesis; inhibition of JAG2 by RNAi or the gamma-secretase inhibitor DAPT preferentially suppresses the neoplastic state. |
Inducible Myc P493-6 B-cell model, RNAi knockdown of JAG2, gamma-secretase inhibitor (DAPT) treatment in vitro and in vivo, direct Myc ChIP/induction assay |
PNAS |
High |
20133585
|
| 2011 |
JAG2 is transcriptionally activated by hypoxia in a HIF-1alpha-dependent manner; hypoxic JAG2 induction elevates Notch activity (increased intracellular Notch1 and HEY1 target gene), and JAG2 expressed by hypoxic tumor cells promotes endothelial cell tube formation in co-culture. |
siRNA knockdown of HIF-1alpha, Notch target gene measurement (icN1, HEY1), co-culture tube formation assay with JAG2 siRNA |
Molecular Cancer Research |
Medium |
21402725
|
| 2012 |
JAG2 expression is required for self-renewal (clonogenic colony formation) and in vivo tumor formation of myeloma cells; blocking JAG-NOTCH interactions with NOTCH-Fc chimeric molecules impairs colony formation, and JAG2 silencing blocks both colony and tumor formation. |
JAG2 siRNA silencing, NOTCH-Fc chimeric molecule blocking, semi-solid colony assay, xenograft tumor formation in immunocompromised mice |
Blood Cells, Molecules & Diseases |
Medium |
22341562
|
| 2013 |
JAG2 promotes Notch activity, clonogenic growth, motility, and invasion in uveal melanoma cells; overexpression increases soft-agar colony formation and invasion, and shRNA-mediated knockdown suppresses growth and invasion, with a corresponding increase in JAG2 and Hes1 mRNA in invasive cells. |
JAG2-GFP overexpression constructs, shRNA knockdown, soft-agar colony assay, wound-healing and transwell invasion assays, Hes1 mRNA measurement |
Investigative Ophthalmology & Visual Science |
Medium |
23211831
|
| 2014 |
JAG2 is identified as a direct MYC transcriptional target in medulloblastoma; MYC-driven transcriptional activation of JAG2 is specific to Group 3 (MYC-amplified) medulloblastoma and links the MYC oncogene to Notch pathway activation in these tumors. |
Expression analysis in MB cohorts, in vitro MYC activation studies, qPCR for JAG2 in MYC-high vs. low cells |
Acta Neuropathologica Communications |
Medium |
24708907
|
| 2017 |
JAG2 expression in colorectal cancer is regulated by Wnt/beta-catenin signaling (APC deletion or beta-catenin knockdown modulates JAG2); JAG2 promotes chemoresistance through p21, as forced p21 expression rescues sensitivity of JAG2-knockdown cells and p21-null cells are insensitive to JAG2 knockdown. |
Pharmacological beta-catenin inhibition, siRNA knockdown, Apc conditional knockout mice, in vivo tumorigenicity assay, p21 forced expression rescue experiment |
Oncotarget |
Medium |
28881809
|
| 2018 |
JAG2 signaling activates Notch in CD14+ monocytes to drive their differentiation into LCH-like cells (acquiring CD1a and langerin), inducing an LCH gene signature; Notch inhibition suppresses this phenotype. |
In vitro JAG2 co-culture of monocytes, Notch inhibitor treatment, flow cytometry, gene expression profiling |
Journal of Leukocyte Biology |
Medium |
30296338
|
| 2019 |
JAG2 activates Notch2/Hes1/Hey2 signaling in nucleus pulposus cells to promote proliferation via cyclin D1 and PI3K/Akt and Wnt/beta-catenin pathways, and inhibits TNF-alpha-induced apoptosis by suppressing formation of the RIP1-FADD-caspase-8 complex; intradiscal injection of JAG2 alleviates disc degeneration in rats. |
Recombinant JAG2 protein treatment, Notch2/Hes1/Hey2 siRNA, cell cycle analysis, Co-IP for RIP1-FADD-caspase-8 complex, PI3K/Akt and Wnt pathway inhibitors, intradiscal rat injection model |
Arthritis Research & Therapy |
Medium |
31619270
|
| 2019 |
JAG2 promotes migration and invasion of colorectal cancer cells via a non-canonical Notch, non-EMT pathway involving mutual regulation with PRAF2; JAG2-rich exosomes are released from CRC cells in a PRAF2-dependent manner and regulate metastasis in a paracrine fashion. |
siRNA knockdown, transcriptome microarray, Co-expression analysis, exosome isolation, paracrine co-culture assay |
Cancer Cell International |
Medium |
31198409
|
| 2021 |
Biallelic pathogenic variants in JAG2 cause a muscular dystrophy (LGMD R27); Jag2 downregulation in murine myoblasts leads to downregulation of multiple Notch pathway components including Megf10; transcriptome analysis of patient muscle shows misregulation of myogenesis genes including PAX7, implicating Notch pathway dysfunction as the disease mechanism. |
Whole-exome sequencing, muscle transcriptome analysis, Jag2 siRNA knockdown in murine myoblasts, Drosophila genetic interaction studies (Serrate/Drpr), in silico structural prediction of missense variants |
American Journal of Human Genetics |
Medium |
33861953
|
| 2021 |
MSC supernatant inhibits IL-6-mediated STAT3 phosphorylation to activate the p63-JAG2 signaling axis in basal lung epithelial cells, promoting p63+ cell proliferation and repair; the IL-6-p-STAT3-p63-JAG2 pathway was identified as the mechanistic link between MSC secretome treatment and attenuation of acute lung injury. |
Mouse bleomycin-induced ALI model, immunofluorescence, Western blot, flow cytometry, siRNA pathway manipulation |
Stem Cell Research & Therapy |
Medium |
33781349
|
| 2022 |
JAG1 and JAG2 undergo posttranslational modifications in tracheobronchial epithelium: gamma-secretase complex (GSC) and glycogen synthase kinase 3 generate a JAG1 C-terminal peptide and regulate full-length JAG2 surface abundance; these distinct JAG1/JAG2 assemblies regulate Notch signal strength and determine goblet vs. ciliated cell fate in a WNT-independent manner. |
Human air-liquid-interface cultures, gamma-secretase inhibitors, neutralizing peptides/antibodies, WNT pathway agonists/antagonists, RNA-Seq, biochemical fractionation |
JCI Insight |
Medium |
35819850
|
| 2024 |
The JAG2/Notch1 signaling axis is the primary regulator of sebocyte differentiation in mouse skin; specific inhibition of JAG2 ligand or Notch1 receptor with monoclonal antibodies causes loss of mature sebocytes and accumulation of proliferative stem/progenitor cells, a phenotype that is reversible upon lifting Notch inhibition. |
Monoclonal therapeutic antibody inhibition of individual Notch ligands/receptors in mice, histology, cell proliferation assays |
eLife |
High |
39585329
|
| 2025 |
Usp11 deubiquitinates JAG2 (and DLL1) to maintain their stability; loss of Usp11 reduces JAG2 ubiquitination, altering Notch signaling in marginal zone B cells and their survival after ionizing radiation. |
Co-IP and ubiquitination assays in Usp11-/- mice, flow cytometry, histological analysis, single-cell sequencing |
Cell Death & Disease |
Medium |
39904982
|
| 2025 |
CD146 activates NF-κB signaling to upregulate JAG2, which then activates Notch signaling to promote stemness and chemoresistance in hepatocellular carcinoma; JAG2 overexpression rescues Notch activity and stemness suppressed by CD146 knockdown. |
CD146 overexpression/knockdown, JAG2 overexpression rescue experiment, Notch signaling reporter, in vitro self-renewal and chemoresistance assays, xenograft |
Cell Death & Disease |
Medium |
40032820
|
| 2025 |
Tumor-derived JAG2 activates NOTCH3 on macrophages, inducing STAT3 phosphorylation and CCL2 upregulation, driving an immunosuppressive M2-like, neurotrophic macrophage phenotype that promotes perineural invasion; disruption of JAG2-NOTCH3 signaling, STAT3 inhibition, or CCL2 blockade attenuates invasion in vitro and in vivo. |
Single-cell transcriptomics, ligand-receptor analysis, STAT3 inhibition, CCL2 neutralization, JAG2 knockdown, xenograft and sciatic nerve invasion models |
International Journal of Biological Macromolecules |
Medium |
41916520
|
| 2024 |
NEURL1 and NEURL2 (Neuralized-like) ubiquitin ligases do not activate JAG2 because JAG2 lacks the NxxN Neuralized binding motif present in DLL1 and JAG1, establishing differential regulation: NEURL proteins selectively activate only DLL1 and JAG1 among mammalian Notch ligands. |
Humanized Drosophila system, mammalian cell culture Notch activation assays, motif mutagenesis, comparison across all four mammalian Notch ligands |
bioRxivpreprint |
Medium |
bio_10.1101_2024.09.20.614084
|
| 2025 |
JAG2 deficiency and pathogenic JAG2 variants impair Notch signaling and myogenic self-renewal and differentiation in muscle stem cells (MuSCs); MuEC-specific Jag2 knockout reduces MuSC self-renewal (trans-activation), while MuSC-specific Jag2 knockout reduces myogenic differentiation (cis-inhibition); hypomorphic Jag2 mutant mice show depleted MuSCs and impaired muscle regeneration; human reference JAG2 but not pathogenic variants rescues Drosophila Serrate deficiency. |
Cell-type-specific conditional Jag2 knockout mice, co-culture experiments, Drosophila Serrate rescue with human JAG2 constructs, hypomorphic Jag2 mutant mouse analysis, overexpression of pathogenic variants |
bioRxivpreprint |
High |
bio_10.1101_2025.07.23.665646
|