| 1996 |
Id3 inhibits muscle cell differentiation by preventing formation of functional dimers with myogenic bHLH proteins; both the HLH and COOH-terminal domains of Id3 are necessary and sufficient for its dominant-negative activity, and stable overexpression of Id3 reduces DNA-binding activity in nuclear extracts from myoblasts. |
Stable overexpression, antisense blockade, in vitro DNA-binding assay, in situ hybridization |
Cell Growth & Differentiation |
High |
8853902 8853903
|
| 1996 |
Id3 physically interacts with E12, E47, ALF1, and Id4 (identified by yeast two-hybrid and confirmed by co-immunoprecipitation), disrupts their DNA binding in vitro, and blocks transcriptional activation by E-proteins in cultured cells; Id3 also shows evidence of interaction with E2-2 and MyoD but not c-Myc. |
Yeast two-hybrid, co-immunoprecipitation, EMSA, reporter gene assay |
Nucleic Acids Research |
High |
8759016
|
| 1997 |
Cyclin E-Cdk2 and cyclin A-Cdk2 phosphorylate Id3 at Ser5 during late G1-to-S phase transition; phosphorylation alters Id3 target bHLH specificity and nullifies Id3's ability to promote S-phase entry. A phosphomimetic Id3(Asp5) mutant fails to promote S-phase entry, while a phospho-ablating Id3(Ala5) mutant displays enhanced activity compared with wild-type Id3. |
In vitro kinase assay, site-directed mutagenesis, EMSA, reporter gene assay, transfected fibroblast proliferation assay |
Molecular and Cellular Biology |
High |
9372912
|
| 1998 |
Id3 selectively targets E2A (E47) over other bHLH proteins in non-lymphoid hematopoietic cells; enforced Id3 expression in K562 erythroid progenitors promotes erythroid differentiation by shifting the profile of TAL1/E-protein heterodimers binding to E-box sequences, as shown by band-shift assays and a Gal4-VP16 two-hybrid competition assay. |
Retroviral overexpression, EMSA, Gal4-VP16 two-hybrid competition, E-box reporter assay |
Journal of Biological Chemistry |
High |
9525934
|
| 1999 |
Id3 deficiency in mice impairs B-cell proliferation in response to BCR cross-linking, identifying Id3 as an essential mediator of BCR-to-cell-cycle-progression signaling; the proliferation defect can be rescued by ectopic expression of Id1, demonstrating functional redundancy within the Id family. |
Gene knockout mouse, BCR cross-linking proliferation assay, retroviral Id1 rescue |
Molecular and Cellular Biology |
High |
10454544
|
| 1999 |
Targeted disruption of Id1 and Id3 together in mice causes premature neuroblast withdrawal from the cell cycle, neural differentiation marker expression, forebrain vascular malformations, and failure to support tumor xenograft growth/vascularization, establishing Id1/Id3 as required for maintaining neuronal cell-cycle timing and tumour angiogenesis. |
Double knockout mouse, tumor xenograft assay, histology, immunofluorescence |
Nature |
High |
10537105
|
| 2000 |
Id3 (and Id2) suppress the development of CD34+ progenitors into pre-DC2 (plasmacytoid DC precursors) but not into DC1 precursors, while promoting NK cell development; this establishes Id3 as a lineage-fate switch between DC2/T/B versus NK cell fates. |
Retroviral ectopic expression in CD34+ progenitor culture system, flow cytometry |
Journal of Experimental Medicine |
Medium |
11120774
|
| 2000 |
Id3 null mutation in mice abrogates MHC class I- and class II-restricted thymocyte positive selection and severely perturbs H-Y TCR-mediated negative selection; genetic interaction between E2A and Id3 in thymocyte development was demonstrated by epistasis analysis. |
Id3 knockout mouse, thymocyte selection assay, epistasis with E2A |
Immunity |
High |
10661402
|
| 2001 |
Id3 is induced by TGF-β in lymphocyte progenitors and mediates TGF-β-induced apoptosis and growth arrest; in Id3-deficient progenitors the growth-suppressive and pro-apoptotic response to TGF-β is perturbed, placing Id3 downstream of TGF-β and upstream of E-protein-controlled survival. |
Id3 knockout mouse, TGF-β treatment, apoptosis assay, lymphocyte progenitor culture |
Nature Immunology |
High |
11224524
|
| 2001 |
TCR-mediated signaling through the ERK MAPK cascade rapidly induces Id3 transcription in a dose-dependent manner, which lowers E2A DNA-binding activity in primary thymocytes without altering E2A protein levels, directly linking the Ras-ERK pathway to HLH regulation in a linear signaling pathway. |
Primary thymocyte culture, TCR ligation, ERK inhibition, EMSA, RT-PCR, Western blot |
Nature Immunology |
High |
11175815
|
| 2002 |
Angiotensin II induces Id3 expression in vascular smooth muscle cells via superoxide production (blocked by SOD but not catalase); Id3 upregulation drives VSMC proliferation by downregulating p21(WAF1/Cip1), p27(Kip1), and p53 and causing retinoblastoma protein hyperphosphorylation; antisense Id3 abolishes all these effects. |
Differential display, antisense transfection, Western blot, DNA synthesis assay, sense-Id3 overexpression |
Circulation |
Medium |
12021231
|
| 2004 |
Id3 protein is ubiquitinated and degraded by the proteasome; Id3 physically interacts with CSN5 and CSN7 subunits of the COP9 signalosome (demonstrated by mammalian two-hybrid, pull-down, and far-Western), and CSN-associated kinase inhibitors (curcumin, emodin) induce Id3 ubiquitination and degradation; CSN2 overexpression stabilizes Id3. |
Mammalian two-hybrid, pull-down, far-Western, His-ubiquitin co-transfection, proteasome inhibition |
Journal of Molecular Biology |
High |
15451666
|
| 2004 |
Phosphorylation of Id3 in vascular smooth muscle cells provides a regulatory switch controlling Id3-induced repression of p21(Cip1) and VSMC growth, occurring both in vitro and in vivo during vascular lesion formation. |
Phosphorylation assay in primary VSMCs and in vivo lesion model, p21(Cip1) reporter assay |
Circulation Research |
Medium |
15321928
|
| 2004 |
An intron-retention isoform of Id3 (Id3a), expressed during vascular lesion formation, fails to promote smooth muscle cell growth or repress p21(Cip1) but instead stimulates SMC apoptosis and inhibits endogenous Id3 production; adenoviral Id3a delivery inhibits vascular lesion formation in balloon-injured rat carotid arteries in vivo. |
In vivo balloon injury model, adenoviral gene delivery, Id3a-specific antibody, proliferation/apoptosis assays, p21(Cip1) reporter assay |
Journal of Biological Chemistry |
High |
15159391
|
| 2004 |
Id3-deficient mice develop autoimmune Sjögren's syndrome-like disease; adoptive transfer experiments demonstrate a T cell-intrinsic role for Id3, and neonatal thymectomy rescues disease symptoms, establishing that Id3 controls thymic T cell development that prevents autoimmune exocrinopathy. |
Id3 knockout mouse, adoptive transfer, neonatal thymectomy, histology, autoantibody assay |
Immunity |
High |
15485632
|
| 2005 |
Id3 induces apoptosis in immortalized keratinocytes via a Bax-mediated mitochondrial caspase-9 pathway, activating caspase-3; dominant-negative caspase-9 or Bcl-2 overexpression suppresses Id3-induced apoptosis, and siRNA knockdown of Id3 abrogates UVB-induced caspase-3 activation. |
Overexpression, siRNA, dominant-negative caspase-9 co-transfection, Annexin V, active caspase-3/9 immunostaining |
Oncogene |
High |
16449966
|
| 2005 |
Id3 induces growth arrest and caspase-2-dependent apoptosis in B lymphocyte progenitors through a mechanism that does not require p53 and is not inhibited by Bcl-2; Id3 reduces expression of E-protein target genes and proliferation genes, and chemical growth arrest alone is sufficient to activate caspase-2. |
Retroviral Id3 expression, caspase-2 assay, p53-deficient and Bcl-2-overexpressing cells, gene expression analysis |
Journal of Immunology |
High |
16177095
|
| 2006 |
MeCP2 binds near or within the promoters of ID1, ID2, and ID3 genes (confirmed by chromatin immunoprecipitation) and represses their transcription; loss of MeCP2 results in elevated ID3 expression in mouse brain and human Rett syndrome brain. |
Chromatin immunoprecipitation, genome-wide expression microarray, quantitative RT-PCR, immunofluorescence, laser scanning cytometry |
Human Molecular Genetics |
High |
16682435
|
| 2007 |
Id3 represses p27(Kip1) mRNA transcription in early G1 phase through inhibition of the transcription factor ELK1; Id3 silencing reverses injury-induced p27 downregulation, blocks pRb phosphorylation and p130 degradation, and prevents G1/S transition; Id3 interaction with ELK1 at the p27 promoter was demonstrated by ChIP. |
siRNA, quantitative PCR, reporter gene assay, chromatin immunoprecipitation, flow cytometry |
Oncogene |
High |
17404577
|
| 2008 |
Id3 inhibits adiponectin expression by binding E47 and preventing E47-mediated potentiation of SREBP-1c-driven adiponectin promoter activation; Id3 dose-dependently inhibits E47 transcriptional activity, E47 binding to the adiponectin promoter is abolished by Id3 overexpression and enhanced in Id3-null adipose tissue (demonstrated by ChIP), and Id3-null mice show increased serum adiponectin. |
ChIP, reporter gene assay, Id3 overexpression and Id3-null mice, adiponectin promoter mutagenesis |
Circulation Research |
High |
18669923
|
| 2008 |
RhoA/Rho-associated kinase signaling in proliferating myoblasts activates MRTF-A, which forms a complex with Smad1/4 to strongly activate Id3 gene transcription; during differentiation, a forkhead transcription factor translocates to the nucleus and suppresses Id3 expression by preventing MRTF-A–Smad complex association with the Id3 promoter. |
C2C12 myoblast culture, RhoA/ROCK inhibition, MRTF-A/Smad co-IP, Id3 promoter reporter assay, forkhead factor overexpression |
Journal of Biological Chemistry |
High |
18477564
|
| 2010 |
Blimp-1 binds to and represses the Id3 promoter in short-lived effector CD8+ T cells (SLECs); this repression of Id3 limits the ability of SLECs to persist as memory cells; enforced Id3 expression restores SLEC survival and recall responses, and Id3 functions in part by inhibiting E2A transcriptional activity. |
ChIP (Blimp-1 binding to Id3 promoter), retroviral Id3 overexpression, Id3-/- mice, KLRG-1/memory marker analysis |
Nature Immunology |
High |
22057288
|
| 2010 |
Deletion of Id3 results in defective Foxp3+ regulatory T cell generation; two TGF-β1-dependent mechanisms are identified: (1) enhanced E2A binding to the Foxp3 promoter promotes Foxp3 transcription, and (2) Id3 is required to relieve GATA-3-mediated inhibition of the Foxp3 promoter; Id3-/- T cells show increased Th17 differentiation. |
Id3 knockout mouse, TGF-β1 stimulation, Foxp3 promoter reporter, ChIP (E2A and GATA-3 binding), in vitro Th17 differentiation, asthma model |
Nature Immunology |
High |
21131965
|
| 2010 |
In promoters of BMP target genes, BMP2 signals via BMPR2, BMPR1A (ALK3), and intracellular SMADs 1 and 5 to stimulate Id3 transcription; a novel proximal 6-bp cis-element and a more distal enhancer both mediate BMP2/SMAD-dependent Id3 transcription; a specific DNA-binding protein complex binds the proximal element. |
Quantitative RT-PCR, promoter-reporter analysis, overexpression and RNA interference of receptors and SMADs, EMSA |
Molecular and Cellular Endocrinology |
High |
21056086
|
| 2011 |
Id3-high CD8+ T cells are precursors of long-lived memory cells, identifiable before peak expansion; Id2 and Id3 deficiency each cause loss of distinct effector and memory CD8+ T cell subsets; cytokines differentially regulate Id2 and Id3 expression, demonstrating unique roles for each inhibitor of E-protein transcription factors in effector-memory fate decisions. |
Id2/Id3 reporter knock-in mice, Id2 and Id3 knockout mice, flow cytometry, cytokine treatment |
Nature Immunology |
High |
22057289
|
| 2011 |
Id3 expression beyond the pre-TCR checkpoint enforces the naive T cell fate by antagonizing E2A activity; Id3-deficient thymi show aberrant effector-memory cell development and increased CXCR5/Bcl-6 expression; genome-wide ChIP-seq shows E2A promotes T lineage specification and pre-TCR signaling reshapes E2A genome-wide occupancy. |
Id3 knockout mouse, ChIP-seq (E2A genome-wide occupancy), flow cytometry, immunohistology |
Nature Immunology |
High |
21857655
|
| 2011 |
EGFR signals through AKT-mediated direct phosphorylation of Smad5 to induce ID3 expression in glioblastoma; ID3 alone confers glioma stem-like cell features to primary astrocytes from Ink4a/Arf-deficient mice; the EGFR-ID3-IL-6 signaling axis drives tumor cell heterogeneity. |
EGFR inhibitor treatment, Smad5 phosphorylation assay (AKT-Smad5 direct phosphorylation), Id3 overexpression in primary astrocytes, tumorsphere assay, cytokine ELISA |
Cancer Research |
Medium |
21975932
|
| 2012 |
ID1 and ID3 together govern colon cancer-initiating cell self-renewal through cell-cycle restriction driven by the CDK inhibitor p21; ID1/ID3 silencing prevents accumulation of excess DNA damage and functional exhaustion of cancer-initiating cells. |
siRNA knockdown of ID1 and ID3, serial transplantation assay, p21 expression analysis, DNA damage assay |
Cancer Cell |
Medium |
22698403
|
| 2012 |
Id3 mediates atheroprotective B-cell homing to the aorta through the chemokine receptor CCR6; loss of Id3 reduces aortic B cells without affecting peripheral B cell numbers; transferred Id3-/- B cells fail to home to the aorta and cannot inhibit atherosclerosis; Id3 regulates CCR6 expression as an identified target. |
Id3 KO crossed to ApoE-/- mice, adoptive B cell transfer, flow cytometry, atherosclerosis quantification |
Circulation Research |
High |
22034493
|
| 2012 |
Id3 represses VCAM-1 expression by inhibiting E12 binding to the VCAM-1 promoter; ChIP demonstrates E12 interaction with the VCAM-1 promoter that is inhibited by Id3; gain and loss of function in primary VSMCs identifies Id3 as a repressor of VCAM-1 promoter activation. |
ChIP, VCAM-1 promoter reporter assay, Id3 gain/loss of function in primary VSMCs, Id3 KO mice |
Arteriosclerosis Thrombosis and Vascular Biology |
High |
23042815
|
| 2012 |
ID3 promotes cell-cycle progression in pancreatic duct cells and is sufficient to trigger cell-cycle entry (Ki67, phospho-cyclin E, phospho-histone H3) when expressed via adenovirus in primary human pancreatic duct cells; in β-cells Id3 similarly represses p57(Kip2) but instead of S-phase entry induces a DNA damage response (γH2AX, 53BP1 relocalization). |
Adenoviral Id3 expression, Ki67/pH3/phospho-cyclin E immunostaining, BrdU incorporation, γH2AX/53BP1 immunostaining |
Molecular Cancer Research / Islets |
Medium |
21498546 21964314
|
| 2014 |
Id2 and Id3 expression in regulatory T cells is required to suppress fatal inflammatory disease; TCR-driven signaling initially decreases Id3 abundance to activate a follicular regulatory T cell transcriptional signature; sustained loss of Id2 and Id3 impairs proper development, maintenance, and localization of Treg cells. |
Conditional Id2/Id3 deletion in Treg cells, flow cytometry, gene expression profiling |
Nature Immunology |
High |
24973820
|
| 2015 |
Id3 regulates Th9/IL-9 production: TGF-β1 and IL-4 downregulate Id3 expression through the kinase TAK1; reduced Id3 enhances binding of E2A and GATA-3 to the Il9 promoter, promoting IL-9 transcription; Id3 deletion increases IL-9 production in vitro and in human CD4+ T cells, and ID3-mediated control regulates anti-tumor immunity in vivo. |
Id3 KO mouse, TAK1 inhibition, ChIP (E2A/GATA-3 binding to Il9 promoter), reporter assay, in vivo melanoma model |
Nature Immunology |
High |
26322481
|
| 2015 |
Genetic depletion of Id3 reduces astrocyte generation from adult SVZ neural stem/precursor cells after traumatic brain injury; BMP-2 induces Id3 in the SVZ stem cell niche; Id3-deficient NSPCs cannot differentiate into BMP-2-induced astrocytes, whereas NSPCs deficient for E47 (the Id3-controlled target) readily differentiate into astrocytes without BMP-2, establishing Id3 as the BMP-2-induced regulator that promotes NSPC-to-astrocyte differentiation by restraining E47. |
Id3 KO mouse, cortical brain injury model, BMP-2 treatment, NSPC culture, E47 conditional KO, astrocyte differentiation assay, gene expression profiling |
EMBO Journal |
High |
26438726
|
| 2016 |
Down-regulation of Id3 in B cells is essential for releasing E2A and E2-2 (acting redundantly) required for antigen-induced B cell differentiation into germinal center and plasma cells; Id3 down-regulation controls expression of Blimp1, Xbp1, and CXCR4 and is therefore critical for establishing the transcriptional network governing GC B cell and plasma cell differentiation. |
Id3 KO and inducible KO in B cells, flow cytometry, immunization, gene expression analysis |
Journal of Experimental Medicine |
High |
27217539
|
| 2016 |
High E47 activity in Treg cells leads to unstable Foxp3 expression; Id3 restricts E47 activity to maintain Foxp3 transcription; E47 activates Spi-B and SOCS3, which downregulate Foxp3; Id3-deficient or E47-overexpressing Treg cells lose Foxp3 expression in vivo and in vitro, establishing an Id3-E47-Spi-B/SOCS3-Foxp3 regulatory axis. |
Id3 KO Treg cells, E47 retroviral overexpression, Foxp3 reporter, gene expression analysis, in vivo/in vitro Treg stimulation |
Cell Reports |
High |
27974197
|
| 2017 |
ATM phosphorylates ID3 at serine 65 within the HLH motif in response to DNA double-strand breaks; phosphorylated ID3 directly interacts with MDC1; ID3 depletion impairs ionizing radiation-induced MDC1 foci formation, suppresses γ-H2AX-bound MDC1, impairs DSB repair, and causes genomic instability; disruption of the MDC1-ID3 interaction prevents MDC1 accumulation at DNA damage sites. |
Co-IP, in vitro interaction assay, ATM kinase assay, IR-induced foci assay, γ-H2AX ChIP, comet assay, siRNA knockdown |
Nature Communications |
High |
29026069
|
| 2017 |
ANGPTL4 binds cadherin-11, releasing membrane-bound β-catenin which translocates to the nucleus and transcriptionally upregulates ID3; ID3 then interacts with scleraxis (a bHLH transcription factor) to inhibit scar-associated collagen type 1α2 and 3α1 production by fibroblasts. |
ANGPTL4 treatment, β-catenin nuclear fractionation, ID3 promoter reporter, co-IP (ID3-scleraxis), siRNA, collagen gene expression |
Scientific Reports |
Medium |
28740178
|
| 2018 |
CD5L promotes M2 macrophage polarization through an autophagy-dependent mechanism: CD5L increases LC3-II and lysosome colocalization; siRNA targeting ATG7 blocks CD5L-induced ID3 upregulation (and downstream CD163/MerTK expression/efferocytosis); ID3 silencing reverses CD5L-induced M2 polarization, establishing an autophagy (ATG7)-ID3 axis in macrophage polarization. |
siRNA (ATG7, ID3), flow cytometry, RT-qPCR, gene expression profiling (THP1), LC3-II immunostaining |
Frontiers in Immunology |
Medium |
29593730
|
| 2019 |
ID3 interacts with E47 and blocks E47 recruitment to the β-catenin promoter, leading to activation of Wnt/β-catenin signaling; this mechanism underlies ID3-promoted stemness in intrahepatic cholangiocarcinoma. |
Co-IP (ID3-E47), ChIP (E47 binding to β-catenin promoter), reporter assay, Wnt/β-catenin pathway analysis, sphere and xenograft assays |
Hepatology |
Medium |
30520117
|
| 2024 |
The lineage-determining factor ID3 in Kupffer cells controls the macrophage inhibitory/activating receptor balance by buffering binding of transcription factors ELK1 and E2A at the SIRPA locus, shifting phagocytic activity and lymphoid effector recruitment; loss- and gain-of-function experiments demonstrate ID3 is sufficient to confer anti-tumor activity to bone-marrow-derived macrophages and human iPSC-derived macrophages. |
Loss- and gain-of-function in mouse and human macrophages, ChIP/ATAC at SIRPA locus (ELK1/E2A binding), tumor phagocytosis assay, NK/CD8 T cell recruitment assay |
Nature |
High |
38326607
|