| 2002 |
RANKL selectively induces NFATc1 expression via TRAF6 and c-Fos signaling pathways, and RANKL-evoked Ca2+ oscillations lead to calcineurin-mediated activation (dephosphorylation) of NFATc1, triggering a sustained NFATc1-dependent transcriptional program during osteoclast differentiation. NFATc1-deficient embryonic stem cells fail to differentiate into osteoclasts, and ectopic NFATc1 expression drives osteoclastogenesis without RANKL, establishing NFATc1 as the master transcriptional switch downstream of RANKL. |
Genetic knockout (NFATc1-/- ES cells), retroviral ectopic expression, Ca2+ oscillation imaging, calcineurin inhibitor studies |
Developmental Cell |
High |
12479813
|
| 1997 |
Glycogen synthase kinase-3 (GSK-3) phosphorylates conserved serine residues in the N-terminus of NFATc1, promoting nuclear export and opposing Ca2+-calcineurin-mediated nuclear import. GSK-3 was purified as the NFATc1 kinase (together with a priming kinase activity) and shown to directly phosphorylate NFATc1 conserved serines required for nuclear export. |
Biochemical purification of NFATc1 kinase activity, in vitro phosphorylation assay, nuclear localization studies |
Science |
High |
9072970
|
| 1998 |
NFATc1 is essential for cardiac valve formation (aortic and pulmonary valves); it is expressed specifically in cardiac endothelial cells and its nuclear translocation in endocardial cells is controlled by calcineurin, as demonstrated by cyclosporin A treatment retaining NFATc1 in the cytoplasm of normal embryos. |
Targeted gene disruption (knockout mice), calcineurin inhibitor (cyclosporin A) treatment, immunolocalization in cardiac endothelial cells |
Nature |
High |
9515964
|
| 1998 |
Solution NMR structure of the binary NFATC1 DNA-binding domain (DBD) complexed with the ARRE2 DNA site from the IL-2 promoter reveals that DNA binding induces folding of structural elements required for sequence-specific recognition and cooperative protein-protein contacts; the orientation of NFAT DBD in the binary complex differs from that in the ternary NFATC2/AP-1/DNA complex, indicating domain reorientation upon formation of a cooperative transcriptional complex. |
NMR solution structure determination |
Cell |
High |
9506523
|
| 2000 |
GSK-3 inhibits the intrinsic DNA-binding activity of NFATc1 by phosphorylating the conserved Ser-Pro repeat motifs; calcineurin dephosphorylation enhances DNA binding, while in vitro phosphorylation of NFATc1 by GSK-3 inhibits its ability to bind DNA, demonstrating regulation at the level of DNA-binding activity in addition to subcellular localization. |
Gel mobility shift assay (EMSA), in vitro phosphorylation, calcineurin activation in cells, NFATc1 Ser-Pro repeat mutant analysis |
Journal of Biological Chemistry |
High |
11063740
|
| 2000 |
JNK, ERK, p38, and CK2 physically associate with the NFATc1 N-terminal regulatory domain, directly phosphorylate Ser172 and the conserved Ser-Pro repeats to regulate nuclear localization, and overexpression of JNK, ERK, or p38 blocks ionomycin-induced NFATc1 nuclear translocation. CK2 also binds the N-terminus and phosphorylates a conserved motif downstream of Ser-Pro repeats important for nuclear export. |
Co-immunoprecipitation, in vitro kinase assays, subcellular localization studies, overexpression and pharmacological inhibition of kinases |
Journal of Biological Chemistry |
High |
10652349
|
| 2005 |
NFATc1 autoregulates its own expression through its P1 promoter (within a CpG island): NFATc1 binds tandemly arranged NFAT sites in its own promoter to sustain high-level expression selectively in osteoclasts in vivo. This autoregulatory loop explains why NFATc2 can rescue osteoclastogenesis in vitro but not in vivo, since NFATc1 autoregulation at the epigenetic level is uniquely required for cell-lineage commitment. |
Adoptive transfer of NFATc1-/- hematopoietic stem cells, blastocyst complementation, retroviral rescue, promoter analysis (ChIP, reporter assays), NFATc1 ectopic expression |
Journal of Experimental Medicine |
High |
16275763
|
| 2001 |
NFATc1 undergoes activity-dependent, calcineurin-sensitive nuclear translocation in adult skeletal muscle fibers specifically in response to slow-twitch (10 Hz continuous or 10 Hz trains) but not fast-twitch stimulation patterns, contributing to slow-twitch fiber type-specific gene expression. Constitutively active NFATc1(S→A) shows a distinct intranuclear foci pattern in unstimulated fibers. |
GFP-fusion protein live imaging in cultured adult mouse skeletal muscle fibers, electrical stimulation with defined patterns, cyclosporin A (calcineurin inhibitor) treatment |
Journal of Cell Biology |
High |
11581284
|
| 2002 |
The short isoform NFATc1/αA is selectively induced to high levels via autoregulation of the NFATc1 P1 promoter (containing tandem NFAT binding sites within a CpG island DNase I hypersensitive site) by NFATs in effector T cells. This isoform does not promote apoptosis (unlike other NFATs), enhancing effector T cell survival. A second promoter P2 before exon 2 is not NFAT-controlled and directs longer isoforms. |
Promoter reporter assay, DNase I hypersensitivity mapping, NFAT binding site mutation, apoptosis assays, isoform-specific expression analysis |
Immunity |
High |
12121669
|
| 2008 |
NFATc1 is preferentially expressed in hair follicle stem cells in their niche where it acts downstream of BMP signaling to transcriptionally repress CDK4 and maintain stem cell quiescence. Pharmacological or genetic NFATc1 ablation leads to premature stem cell activation and precocious follicular growth. |
Conditional and complete NFATc1 gene ablation, cyclosporin A pharmacological suppression, CDK4 reporter assays, hair follicle stem cell analysis |
Cell |
High |
18243104
|
| 2008 |
NFATc1 directly binds to a novel regulatory element at the pdcd1 (PD-1) locus to regulate PD-1 gene expression upon T cell activation; NFATc1 binding was demonstrated by ChIP assay, and mutation of the NFATc1 binding site completely abolished promoter activity. |
Chromatin immunoprecipitation (ChIP), luciferase reporter assay with NFATc1 binding site mutation, calcineurin inhibitor (cyclosporin A) and NFAT inhibitor treatment |
Journal of Immunology |
High |
18802087
|
| 2007 |
During osteoclast differentiation, MITF and PU.1 form complexes at osteoclast target gene promoters (cathepsin K, acid phosphatase 5) in response to CSF-1 alone, while RANKL+CSF-1 additionally recruit p38 MAPK-phosphorylated MITF and SWI/SNF chromatin-remodeling complexes. NFATc1 is subsequently recruited to these promoter complexes during terminal differentiation to maintain target gene expression. |
ChIP on target gene promoters, Co-IP of transcription factor complexes, MITF/PU.1 mouse genetic models |
Journal of Biological Chemistry |
High |
17403683
|
| 2014 |
NFATc1 forms a transcriptional complex with STAT3 in pancreatic epithelial cells that promotes KrasG12D-driven carcinogenesis; NFATc1-STAT3 complexes mediate enhancer-promoter communications at jointly regulated oncogenic genes (Cyclin, EGFR, WNT family members). Genetic or pharmacologic NFATc1 ablation attenuates inflammation-induced carcinogenesis. |
Co-immunoprecipitation, ChIP, genetic mouse models (NFATc1 activation/ablation in KrasG12D background), pharmacological inhibition |
Cancer Discovery |
High |
24694735
|
| 2011 |
RANKL/NFATc1 signaling in epicardium-derived cells (EPDCs) induces cathepsin K (CTSK) expression for extracellular matrix degradation and cell invasion into myocardium; conditional loss of NFATc1 in EPDCs reduces coronary vessel and fibrous matrix penetration. RANKL treatment induces Ctsk expression in PE-derived cell cultures via a calcineurin-dependent mechanism. |
Conditional knockout of NFATc1 in EPDCs, calcineurin inhibitor treatment, RANKL stimulation of PE-derived cell cultures, in vivo embryonic analysis |
Development |
High |
21447555
|
| 2014 |
STAT3 drives the transcription of NFATc1 by directly binding to its promoter in osteoclasts; STAT3-deficient bone marrow macrophages show decreased NFATc1 expression and impaired osteoclast differentiation, which is rescued by enforced NFATc1 expression. |
Conditional Stat3 knockout (Ctsk-Cre), ChIP for STAT3 binding to NFATc1 promoter, siRNA knockdown of STAT3, enforced NFATc1 expression rescue |
Journal of Biological Chemistry |
High |
31462535
|
| 2017 |
DYRK1A phosphorylates NFATc1/αA at S261, S278, S403, and S409, interfering with NFATc1 ubiquitination and ubiquitin-proteasome degradation, thereby increasing NFATc1 protein stability and transcriptional activity (in contrast to its known role in destabilizing NFATc2). |
In vitro phosphorylation assay with site-specific mutants, ubiquitination assay, protein stability analysis |
PLoS ONE |
High |
28235034
|
| 2011 |
DYRK1A directly inhibits NFATc1 through phosphorylation (inactivation); harmine, a DYRK1A inhibitor, promotes NFATc1 dephosphorylation/activation in osteoclast precursors. In vitro phosphorylation assay demonstrated that harmine directly inhibited DYRK1A-mediated phosphorylation of NFATc1. |
In vitro phosphorylation assay, harmine treatment of RAW264.7 and bone marrow macrophages, NFATc1 expression analysis |
Bone |
Medium |
21504804
|
| 2012 |
Cot kinase (Tpl-2) directly phosphorylates all Ca2+/calcineurin-regulated NFAT family members (NFATc1–NFATc4) and increases their protein stability/levels, promoting Ca2+ oscillation/calcineurin-independent osteoclastogenesis. Cot activity was enhanced by osteoblast–osteoclast cell-cell interaction. |
In vitro kinase assay, co-culture system, Cot overexpression/knockdown in osteoclasts, protein stability analysis |
Molecular and Cellular Biology |
High |
22615493
|
| 2021 |
SUMOylation of NFATc1 represses IL-2 production in T cells; mice with prevented NFATc1 SUMOylation show elevated IL-2, expanded Tregs, and suppressed autoreactive/alloreactive immune responses. Increased IL-2 from non-SUMOylated NFATc1 counteracts IL-17 and IFN-γ through STAT5 and Blimp-1 induction. |
Transgenic knock-in mouse (SUMO modification prevented), EAE and graft-versus-host disease models, cytokine profiling, signaling analysis |
Journal of Experimental Medicine |
High |
32986812
|
| 2015 |
NFATc1 forms a complex with Sox2 to drive EMT reprogramming and maintain pancreatic cancer cells in a stem cell-like state; NFATc1-Sox2-mediated dedifferentiation is opposed by antithetical p53-miR200c signaling. |
Co-immunoprecipitation of NFATc1-Sox2 complex, genetic mouse models (GEMM), NFATc1 knockdown/overexpression, in vitro EMT assays |
EMBO Journal |
High |
25586376
|
| 2024 |
The serine synthesis pathway (SSP)-derived α-ketoglutarate is necessary for histone demethylases that remove repressive H3K27me3 marks at the Nfatc1 gene locus, inducing NFATc1 expression and consequent osteoclast maturation. Deletion of the rate-limiting SSP enzyme phosphoglycerate dehydrogenase impairs osteoclast differentiation and increases bone mass. |
Conditional knockout of PHGDH in osteoclast progenitors, histone methylation ChIP at Nfatc1 locus, pharmacological PHGDH inhibition, α-ketoglutarate metabolite supplementation |
Nature Metabolism |
High |
38200114
|
| 2018 |
ASXL1 loss induces concordant reduction of inhibitory H3K27me3 and gain of H3K4me3 at the NFATc1 and itgb3 gene loci, leading to increased NFATc1 expression and enhanced osteoclastogenesis. Jmjd3 histone demethylase knockdown in ASXL1-deficient precursors restores H3K27me3 on the NFATc1 promoter and impairs osteoclast formation. |
Conditional ASXL1 knockout in myeloid cells, ChIP for H3K27me3/H3K4me3 at NFATc1 promoter, Jmjd3 siRNA knockdown |
Blood Advances |
High |
30266822
|
| 2014 |
NFATc1 regulates the expression of InsP3R2 (type 2 inositol 1,4,5-trisphosphate receptor) by directly binding to the Itpr2 promoter; calcineurin-NFATc signaling drives Itpr2 transcription in cardiomyocytes, creating a positive feedback loop between InsP3R2 and calcineurin-NFATc signaling during cardiac hypertrophy. |
ChIP for NFATc1 binding at Itpr2 promoter, promoter-reporter assay, cyclosporin A inhibition, calcineurin-A transgenic mice, hypertrophic agonist stimulation |
Journal of Biological Chemistry |
High |
24415751
|
| 2009 |
VEGF activates NFATc1 via calcineurin and MEK1-ERK1/2-dependent signaling to promote endocardial cushion cell proliferation during valve development; subsequently RANKL inhibits VEGF-induced proliferation while inducing cathepsin K via calcineurin/NFATc1 and JNK1/2-dependent signaling, demonstrating ligand-specific cofactor cooperation. |
NFATc1-/- mice analysis, chick ECC explant cultures, pharmacological inhibition of calcineurin/MEK/JNK, VEGF/RANKL stimulation |
Circulation Research |
High |
19661463
|
| 2017 |
The cytoplasmic ITIM motif of DC-STAMP regulates NFATc1 nuclear translocation and expression; deletion of ITIM elevates Ca2+ flux amplitude/duration and alters NFATc1-dependent osteoclast phenotypes. DC-STAMP overexpression restores NFATc1 expression in DC-STAMP-/- cells. |
Light-activatable DC-STAMP chimeric molecule, Ca2+ flux imaging, ITIM deletion mutants, NFATc1 nuclear translocation assay, DC-STAMP overexpression |
Journal of Cellular Physiology |
Medium |
27723141
|
| 2003 |
NFATc1 is required cell-intrinsically for normal B-1a cell development; NFATc1 protein is elevated ~5-fold in B-1a cells compared with B-2 cells, and the B-1a compartment is essentially absent in NFATc1-/- mice but normal in NFATc2-/- mice. Mixed-allotype chimeras and retroviral gene transduction confirmed the B cell-intrinsic requirement. |
NFATc1-/- and NFATc2-/- mouse analysis, mixed-allotype chimeras, retroviral NFATc1 gene transduction, flow cytometry |
PNAS |
High |
14595020
|
| 2017 |
Gα13 negatively regulates osteoclastogenesis through the RhoA/Akt/GSK3β/NFATc1 signaling pathway; Gna13-deficiency decreases RhoA activity and enhances Akt/GSK3β/NFATc1 signaling. Akt inhibition or RhoA activation rescues the hyper-activation of Gna13-deficient osteoclasts. |
Osteoclast-lineage-specific Gna13 conditional knockout mice, RNAi, Akt inhibitor and RhoA activator pharmacological rescue, signaling pathway analysis |
Nature Communications |
High |
28102206
|
| 2002 |
GATA5 and NF-ATc (NFATc1) synergistically activate endocardial transcription; inhibition of either GATA5 expression or NF-ATc activation blocks terminal endocardial differentiation at a pre-endocardial stage, establishing cooperative regulation of endothelial-endocardial differentiation. |
In vitro cardiogenic differentiation model, inhibition of GATA5 and NF-ATc, reporter assay for endocardial gene expression |
Development |
Medium |
12163407
|
| 2010 |
Pim-1 kinase interacts with RANK and TAK1 and promotes RANKL-induced NF-κB activation via TAK1; overexpression of dominant-negative Pim-1 blocks RANKL-induced NFATc1 expression and osteoclastogenesis. Pim-1 also regulates NFATc1 transcriptional activity and OSCAR expression. |
Co-immunoprecipitation (Pim-1 with RANK and TAK1), dominant-negative overexpression, RNA interference, NF-κB and NFATc1 reporter assays |
Journal of Immunology |
Medium |
21068407
|
| 2005 |
CCR1 (chemokine receptor) acts as a downstream target of NFATc1/NFAT2 in RANKL-stimulated osteoclastogenesis; the CCR1 upstream regulatory region shows RANKL-dependent and cyclosporin A-suppressible promoter activity, and CCR1 silencing suppresses osteoclast precursor migration. |
Microarray analysis, quantitative RT-PCR, luciferase promoter reporter assay, cyclosporin A inhibition, CCR1 siRNA knockdown, Boyden chamber migration assay |
Journal of Bone and Mineral Research |
Medium |
16355273
|
| 2023 |
NFATc1 transcriptionally upregulates SLC7A11 expression during RANKL-induced osteoclastogenesis, driving cystine import and sensitivity to TXNRD1 inhibitor-induced disulfidptosis in osteoclast precursors. |
ChIP for NFATc1 binding at SLC7A11 locus, siRNA knockdown, SLC7A11 inhibitor rescue, in vivo OVX model |
Redox Biology |
Medium |
37148740
|
| 2015 |
PU.1 directly binds to the NFATc1 promoter in osteoclasts to transactivate NFATc1 expression; PU.1 knockdown reduces NFATc1 mRNA and promoter activity, while enforced PU.1 expression increases NFATc1 and osteoclast differentiation. |
ChIP for PU.1 binding at NFATc1 promoter, luciferase reporter assay, siRNA knockdown, retroviral enforced expression |
Allergology International |
Medium |
26117255
|
| 2020 |
Nfatc1 promotes valve interstitial cell (VIC) formation in zebrafish atrioventricular valve by stimulating VIC proliferation and recruitement of endocardial and neural crest cells; nfatc1 mutants form fewer VICs. NFATc1 promotes expression of twist1b, a regulator of epithelial-to-mesenchymal transition, as a downstream effector. |
Zebrafish nfatc1 mutants, live imaging, high-speed microscopy and echocardiography, downstream effector analysis (twist1b expression) |
Circulation Research |
Medium |
32070236
|
| 2023 |
The deubiquitinase UCHL1 deubiquitinates and stabilizes TAZ at K46 residue (preventing K48-linked polyubiquitination); stabilized TAZ then competes with calcineurin A for binding to NFATc1, inhibiting NFATc1 dephosphorylation and nuclear transport, thereby negatively regulating osteoclastogenesis. |
Co-IP (TAZ-NFATc1 and CNA-NFATc1 interaction), ubiquitination assay (K46 site), UCHL1 conditional knockout mice, proteomic analysis, OVX bone loss model |
International Journal of Biological Sciences |
Medium |
37215988
|
| 2019 |
Homer2 and Homer3 scaffold proteins regulate NFATc1 function by interacting with NFATc1 and modulating its interaction with calcineurin; RANKL treatment inhibits Homer protein interaction with NFATc1 (restored by cyclosporin A treatment). Homer2/3 double knockout increases NFATc1 expression and nuclear translocation without altering Ca2+ oscillations, demonstrating a Ca2+-independent regulation of NFATc1-calcineurin interaction. |
Homer2/3 double knockout mice, Co-IP of Homer proteins with NFATc1 and calcineurin, cyclosporin A treatment, Ca2+ oscillation measurement, NFATc1 nuclear translocation assay |
Journal of Endocrinology |
Medium |
31319381
|
| 2016 |
The transcriptional coactivator/repressor Ifrd1 enhances NF-κB/NFATc1 signaling in osteoclasts; Ifrd1 deficiency increases p65 acetylation at K122/K123 via impaired histone deacetylase-dependent deacetylation, repressing NF-κB-dependent NFATc1 transcription and reducing osteoclastogenesis. |
Ifrd1 global and conditional knockout mice, histone acetylation analysis of p65, HDAC inhibitor studies, NFATc1 reporter and expression analysis |
Molecular and Cellular Biology |
Medium |
27381458
|
| 2019 |
RBP-J represses miR182 expression while NFATc1 activates miR182 transcription through binding to specific open chromatin regions in the miR182 promoter; RBP-J inhibition of miR182 limits TNF-induced osteoclast differentiation and inflammatory bone resorption. |
ChIP for NFATc1 and RBP-J binding at miR182 promoter, ATAC-seq for open chromatin, in vivo inflammatory arthritis model, TNF inhibitor treatment of RA patients |
FASEB Journal |
Medium |
31908034
|
| 2011 |
NFATc1 regulates TRAIL expression in intestinal cells through negative regulation of Sp1 binding to the TRAIL promoter; NFATc1 activation increases TRAIL expression by repressing Sp1 transcription factor binding to the TRAIL promoter. |
NFATc1 siRNA knockdown, NFATc1 overexpression, TRAIL promoter reporter assay with NFAT site deletion, ChIP for Sp1 binding, Sp1 chemical inhibition and siRNA |
PLoS ONE |
Medium |
21603612
|
| 2014 |
NFATc1 activity regulates dexamethasone-induced myocilin (MYOC) expression in human trabecular meshwork cells; dexamethasone induces calcineurin-dependent NFATc1 nuclear translocation within 15 minutes in a calcium-independent mechanism, and NFATc1 siRNA knockdown reduces MYOC mRNA induction. |
NFATc1 siRNA knockdown, calcineurin inhibitors (cyclosporin A, INCA-6), immunofluorescence for NFATc1 nuclear translocation, ionomycin treatment control |
Experimental Eye Research |
Medium |
25450062
|
| 2009 |
FOXP3 competes with NFAT1 for binding to the endogenous NFAT2 (NFATc1) promoter, suppressing NFATc1 transcription in regulatory T cells; ectopic NFAT2 expression partially restores IL-2 production in FOXP3+ Tregs, demonstrating that FOXP3-mediated repression of NFATc1 contributes to T cell anergy. |
ChIP for FOXP3 and NFAT1 at NFATc1 promoter, inducible FOXP3-expressing cell lines, retroviral NFAT2 overexpression, IL-2 reporter assay |
Journal of Immunology |
Medium |
19564342
|
| 2022 |
Cav2.2 (voltage-gated calcium channel) upregulates USP43 deubiquitinase expression through NFAT2 (NFATc1) dephosphorylation and nuclear localization, which then stabilizes cortactin to promote invadopodia formation and breast cancer metastasis. |
Co-immunoprecipitation, siRNA knockdown of Cav2.2/NFAT2/USP43, NFATc1 nuclear localization imaging, invasion assay, in vivo metastasis model |
Cell Death & Disease |
Medium |
36137995
|
| 2022 |
NFATc1 drives NAFLD progression through ER stress sensing and activation of the PERK-CHOP unfolded protein response (UPR) in hepatocytes; hepatocyte-specific NFATc1 depletion prevents disease acceleration in high-fat western diet-fed mice, and NFATc1 activation induces NLRP3 inflammasome activation. |
Hepatocyte-specific NFATc1 conditional knockout and overexpression transgenic mice, high-fat diet model, PERK-CHOP pathway analysis, NLRP3 inflammasome activation assay, TUDCA pharmacological inhibition |
Gut |
High |
35365570
|
| 2019 |
CR3 engagement by M. leprae PGL-I activates the Syk tyrosine kinase, inducing calcineurin-dependent nuclear translocation of NFATc in innate immune cells (macrophages, neutrophils, dendritic cells), selectively augmenting production of IL-2 (DCs), IL-10 (PMNs), and IL-1β (macrophages). |
CR3 engagement assay, Syk kinase inhibitor, calcineurin inhibitor, NFATc nuclear translocation imaging, cytokine measurement in infected mice |
Frontiers in Immunology |
Medium |
31921172
|