| 2015 |
CDK2 directly phosphorylates ELK4 at Thr194 and Ser387, and this phosphorylation regulates ELK4 transcriptional activity to control c-fos expression downstream of EGF signaling. |
In vitro kinase assay (CDK2 phosphorylates ELK4), site-directed mutagenesis at Thr194 and Ser387, transcriptional activity assays, knockdown of CDK2/ELK4 with phenotypic readout (EGF-induced cell transformation) |
Oncogene |
High |
26028036
|
| 2020 |
ELK4 is acetylated at K125; this acetylation enhances its interaction with BRD2, and the ELK4-BRD2 complex cooperatively binds ETS motifs in the LAMB3 promoter to drive LAMB3 transcription in colorectal cancer. The BET inhibitor JQ1 disrupts the ELK4-BRD2 interaction, reducing BRD2 occupancy at the LAMB3 promoter. |
ChIP, Co-IP, luciferase reporter assay, acetylation mapping at K125, JQ1/U0126 treatment with mRNA level readout |
Oncogene |
High |
32398865
|
| 2014 |
ELK4 co-regulates a distinct set of SRF-dependent genes related to external stimulus/infection responses in macrophages (separate from MKL1/2-regulated cytoskeletal genes), acting directly in cis at target gene promoters. |
Knockdown combined with gene expression array; ChIP-seq for genome-wide occupancy mapping |
BMC genomics |
Medium |
24758171
|
| 2011 |
ELK4 binds to a functional ETS binding site in the Mcl-1 promoter and is a critical transcriptional regulator of Mcl-1 expression in glioma; ELK4 downregulation reduces Mcl-1 levels, increases apoptosis sensitivity, and reduces tumor formation in vivo. A SNP that ablates ELK4 binding correlates with lower Mcl-1 levels. |
Promoter analysis, ETS binding site identification, ELK4 knockdown with Mcl-1 mRNA/protein readout, glioblastoma xenograft model |
Neuro-oncology |
Medium |
21846680
|
| 2023 |
PYCR1 is phosphorylated by nuclear IGF1R at Tyrosine 135 under hypoxia, and this phosphorylation promotes PYCR1 binding to ELK4 and recruitment of PYCR1 to ELK4-targeted gene promoters. PYCR1 enzymatic activity produces NAD+ that stimulates SIRT7 deacetylation of H3K18ac, cooperating with the ELK4-SIRT7 complex to mediate transcriptional repression. |
Phosphorylation mapping (Tyr135), co-IP for PYCR1-ELK4 interaction, ChIP for promoter recruitment, enzymatic activity assay for PYCR1-derived NAD+, SIRT7 deacetylation assay, in vivo xenograft |
Nature communications |
High |
37777542
|
| 2023 |
ELK4 cooperates with SP1 and SP3 (rather than SRF) as functional partners at the genome-wide level in colorectal cancer; MAPK-induced phosphorylation of ELK4 facilitates its interaction with SP1/SP3. The ELK4-SP1/SP3 complex directly activates transcription of LRG1, a neoangiogenic factor. |
Integrated genomics and proteomics, ChIP-seq for genome-wide occupancy, Co-IP for ELK4-SP1/SP3 interaction, phosphorylation assay (serum-induced MAPK), luciferase reporter for LRG1 promoter, combination treatment with MEK inhibitor and mithramycin A |
Advanced science |
High |
37786278
|
| 2021 |
ELK4 transcriptionally activates KDM5A by directly binding its promoter; KDM5A then removes H3K4me3 from the PJA2 promoter to repress PJA2 expression, leading to reduced ubiquitination-mediated degradation of KSR1. This ELK4-KDM5A-PJA2-KSR1 axis promotes M2 macrophage polarization and gastric cancer progression. |
Dual luciferase reporter, ChIP, Co-IP, cycloheximide chase (KSR1 protein stability), gain/loss-of-function, xenograft model |
Journal of translational medicine |
Medium |
34372882
|
| 2021 |
ELK4 transcription factor binds to the SNHG22 promoter and promotes SNHG22 lncRNA expression in gastric cancer cells. |
ChIP assay, luciferase reporter assay |
Cell death & disease |
Medium |
34663788
|
| 2018 |
ELK4 (SAP-1) and ELK1 act cell-autonomously in the thymus downstream of ERK signaling to control the generation of innate-like αβ CD8+ T cells; mice lacking both ELK4 and ELK1 develop increased numbers of innate-like CD8+ T cells associated with reduced TCR-mediated activation of ELK4-SRF target genes (e.g., EGR2), and overexpression of EGR2 partially suppresses this phenotype. |
Elk4 and Elk1 knockout mice (genetic epistasis), thymic cell-autonomy demonstrated by bone marrow chimeras, target gene expression analysis, EGR2 overexpression rescue |
Journal of immunology |
High |
30068599
|
| 2009 |
The SLC45A3-ELK4 chimeric transcript is androgen-regulated (not wild-type ELK4), and is generated through a mechanism other than chromosomal rearrangement, most likely trans-splicing, in prostate cancer. SLC45A3 exon 1 is fused to ELK4 exon 2 in the major variant. |
RT-PCR characterization, quantitative PCR on DNA and RNA, androgen (R1881) treatment of LNCaP cells, FISH for chromosomal rearrangement |
Cancer research |
Medium |
19293179
|
| 2017 |
The SLC45A3-ELK4 fusion transcript functions as a long non-coding chimeric RNA (lnccRNA) to promote prostate cancer cell proliferation; the fusion RNA encodes the same protein as ELK4 but is present at <1% of wild-type ELK4 levels. A translation-incompetent mutant of the fusion RNA retains the ability to regulate cell proliferation and suppress CDKN1A, and the fusion RNA is enriched in the nuclear fraction. |
RNA silencing (selective knockdown of fusion vs. wild-type ELK4), rescue with translation-competent and translation-incompetent mutants, subcellular fractionation, cell proliferation assay |
Cancer letters |
Medium |
28716526
|
| 2023 |
ELK4 binds to the FBXO22 promoter and transcriptionally inhibits FBXO22 expression, leading to reduced PTEN levels and promotion of cell cycle progression and stem cell-like characteristics in HPV+ cervical cancer cells. |
ChIP-qPCR, luciferase reporter assay, ELK4 knockdown with cell cycle and stemness phenotype readouts |
Balkan medical journal |
Low |
37519006
|
| 2023 |
ELK4 positively modulates cytokine/chemokine (Hdc, Ccl3, Ccl4) transcription by interacting with MITF, while negatively regulating degranulation-related gene transcription by complexing with SIRT6 in mast cells. ELK4 knockout suppresses mast cell proliferation and impedes cell cycle progression. |
Elk4 knockout in BMMCs, gene expression analysis, Co-IP for ELK4-MITF and ELK4-SIRT6 interactions, transcriptional activity assays |
Frontiers in immunology |
Medium |
37529050
|
| 2024 |
ELK4 directly binds to the CHMP6 promoter to transcriptionally activate CHMP6 expression, thereby inhibiting ferroptosis (reducing ROS and Fe2+ levels, increasing GPX4 and xCT, decreasing ACSL4) and promoting proliferation, invasion, and migration in skin cutaneous melanoma cells. |
ChIP assay for ELK4 binding to CHMP6 promoter, ELK4/CHMP6 overexpression and knockdown with ROS/Fe2+ measurements and ferroptosis marker protein levels |
Archives of dermatological research |
Low |
39305302
|
| 2025 |
ELK4 acts as a transcription factor that directly binds the MSI2 promoter to promote MSI2 transcription in NSCLC, and MSI2 in turn promotes NSCLC progression through the TGF-β/SMAD3 pathway. |
ChIP assay, dual luciferase reporter assay, ELK4/MSI2 knockdown/overexpression with proliferation/invasion assays, xenograft model |
The Kaohsiung journal of medical sciences |
Low |
39969091
|
| 2024 |
ELK4 promotes FNDC5 transcription by binding to the FNDC5 promoter; ELK4 overexpression in microglia suppresses neuroinflammation and cognitive dysfunction in an OSA mouse model through this FNDC5-dependent mechanism. |
Promoter binding assay (ChIP implied), ELK4 overexpression/FNDC5 knockdown rescue experiments in BV2 cells and OSA mouse model |
Brain research bulletin |
Low |
39173777
|
| 2025 |
ELK4 transcriptionally upregulates METTL3 by direct promoter binding; METTL3 then stabilizes CEMIP mRNA, and the resulting ELK4-METTL3-CEMIP axis promotes stemness and malignant phenotypes in colorectal cancer. |
ChIP assay for ELK4 binding to METTL3 promoter, luciferase reporter, RIP and mRNA stability assay for METTL3-CEMIP, ELK4 knockdown xenograft |
Journal of gastroenterology and hepatology |
Low |
40518958
|
| 2025 |
ELK4 directly binds to DHFR enhancer regions to activate DHFR transcription, promoting vasculogenic mimicry and invasion in oral squamous cell carcinoma; DHFR overexpression rescues VM and invasion impairment caused by ELK4 knockdown. |
ChIP-qPCR for ELK4 binding to DHFR enhancer, ELK4 knockdown and DHFR rescue with Matrigel tube formation and Transwell invasion assays |
Oncology research |
Low |
41502523
|
| 2025 |
ELK4 binds to the HOMER3 promoter to promote its transcription in glioma; ELK4-driven HOMER3 expression activates the Wnt/β-catenin/EMT signaling pathway, promoting glioma cell proliferation and metastasis. |
ChIP for ELK4-HOMER3 promoter binding, HOMER3 silencing with proliferation/metastasis assays in vitro and in vivo, EMT marker expression |
Biology direct |
Low |
40205485
|
| 2020 |
LINC00662 mediates degradation of ELK4 mRNA through the Staufen-mediated mRNA decay (SMD) pathway in microvascular endothelial cells; reduced ELK4 increases BBB permeability by increasing tight junction-related protein expression. |
RNA knockdown, mRNA stability assay, BBB permeability assay, tight junction protein expression |
RNA biology |
Low |
32372707
|
| 2022 |
ELK4 transcription factor promotes SNHG22 lncRNA expression in gastric cancer; this was confirmed by ChIP and the 3' UTR of ELK4 mRNA is targeted by miR-92b-3p delivered by exosomes from mechanically unloaded MVECs, leading to suppressed osteogenic differentiation. |
ChIP (ELK4-SNHG22 promoter); luciferase reporter for miR-92b-3p targeting ELK4 3'UTR; siRNA-ELK4 rescue experiments |
Journal of personalized medicine |
Low |
36556251
|
| 2024 |
ELK4 directly activates PD-L1 transcription in colorectal cancer; the lncRNA SNHG16 acts as a competitive endogenous RNA to sponge miR-324-3p, which normally suppresses ELK4 expression, thereby increasing ELK4-driven PD-L1 transcription and promoting immune escape. |
Dual luciferase assay, RIP, ChIP, knockdown/overexpression with immune escape functional assays (LDH cytotoxicity, flow cytometry) |
Biochemical genetics |
Low |
39688781
|