| 2005 |
hMOF (KAT8) is a histone H4 lysine 16-specific acetyltransferase required for bulk H4K16 acetylation in mammalian cells. Knockdown of hMOF in HeLa and HepG2 cells causes dramatic reduction of H4K16ac (confirmed by Western blot and mass spectrometry). hMOF and hMSL3 form a complex in mammalian cells. hMOF-depleted cells accumulate in G2/M and show impaired DNA damage repair response to ionizing radiation, with increased phospho-ATM and γH2AX foci. |
siRNA knockdown, Western blot, mass spectrometric analysis of endogenous histones, co-immunoprecipitation |
Molecular and cellular biology |
High |
16024812
|
| 2005 |
hMOF interacts with ATM protein, and hMOF-dependent H4K16ac is required for ATM autophosphorylation, ATM kinase activity, and downstream effector phosphorylation after ionizing radiation. Blocking H4K16ac increase (via dominant-negative hMOF or siRNA) decreases ATM function and DNA repair while increasing cell killing. |
Co-immunoprecipitation, dominant-negative mutant expression, siRNA knockdown, kinase assays, immunofluorescence |
Molecular and cellular biology |
High |
15923642
|
| 2008 |
Mof (KAT8) is essential for embryonic development past the blastocyst stage in mice. Mof-null embryos fail to acetylate H4K16 but have normal acetylation of other histone lysine residues, demonstrating non-redundant and specific function. Loss of Mof causes abnormal chromatin aggregation preceding caspase-3 activation and DNA fragmentation. |
Conditional knockout mouse model, immunofluorescence, Western blot, caspase-3 assay |
Molecular and cellular biology |
High |
18541669
|
| 2013 |
Autophagy induction leads to downregulation of hMOF, causing reduction of H4K16ac, which is associated predominantly with downregulation of autophagy-related genes. Antagonizing H4K16ac downregulation during autophagy induction promotes cell death, establishing a feedback loop where H4K16ac levels determine the survival vs. death outcome of autophagy. |
Western blot, genome-wide ChIP-seq, siRNA knockdown, cell viability assays |
Nature |
High |
23863932
|
| 2016 |
KAT8/MOF and a subset of its NSL complex partners reside in mitochondria in addition to the nucleus. Mitochondrial MOF binds mtDNA (dependent on KANSL3) and regulates oxidative phosphorylation by controlling expression of respiratory genes from both nuclear and mtDNA. A catalytically deficient MOF mutant fails to rescue respiratory and mtDNA transcriptional defects, indicating catalytic activity is required. |
Subcellular fractionation, ChIP, conditional knockout mouse model (cardiac), RNA-seq, catalytic mutant rescue experiments |
Cell |
High |
27768893
|
| 2021 |
KAT8 exhibits complex-dependent catalytic activity: as part of the NSL complex it catalyzes H4K5ac and H4K8ac, whereas as part of the MSL complex it catalyzes the bulk of H4K16ac. MSL complex proteins and H4K16ac are not required for cell proliferation and chromatin accessibility, whereas the NSL complex is essential for cell survival by stimulating transcription initiation at housekeeping gene promoters. |
Auxin-inducible degron system for protein depletion, mass spectrometry, ATAC-seq, RNA-seq, ChIP-seq |
Molecular cell |
High |
33657400
|
| 2012 |
SIRT1 deacetylates the enzymatic (MYST) domains of hMOF and TIP60, inhibiting their acetyltransferase activity and promoting ubiquitination-dependent degradation. Immediately following DNA damage, SIRT1 binding to hMOF is transiently interrupted with corresponding hMOF hyperacetylation. Lysine-to-arginine mutations at SIRT1-targeted lysines on hMOF repress DNA double-strand break repair and inhibit apoptosis induction. |
Co-immunoprecipitation, in vitro deacetylation assay, mutagenesis, ubiquitination assay, DNA damage repair assays |
Molecular and cellular biology |
High |
22586264
|
| 2011 |
hMOF undergoes autoacetylation in vitro and in vivo, restricted to the MYST domain with K274 as the major autoacetylation site. SIRT1 interacts with the MYST domain of hMOF and deacetylates it. Non-acetylated hMOF binds nucleosomes more robustly; acetylation decreases nucleosome binding. SIRT1 deacetylation of hMOF promotes its chromatin recruitment and H4K16ac activity. |
In vitro acetylation assay, co-immunoprecipitation, in vitro nucleosome binding assay, ChIP, siRNA knockdown |
Cell research |
High |
21502975
|
| 2016 |
Structural and mutational analysis of hMOF K274 autoacetylation reveals that all amino acid substitutions at K274 result in significant destabilization of hMOF and complete loss of catalytic activity toward histone H4. X-ray crystal structure of K274P mutant shows disordering of the α2-β7 loop harboring K274, explaining loss of function. K274 autoacetylation (driven by Ac-CoA binding) is required for hMOF stability and cognate substrate acetylation. |
X-ray crystallography, mutagenesis, in vitro acetyltransferase assay, stability measurements |
The Journal of biological chemistry |
High |
27382063
|
| 2015 |
KAT8 follows a ping-pong kinetic mechanism in which Ac-CoA binds first, followed by the histone substrate. This was confirmed by isothermal titration calorimetry (ITC) affinity measurements of both substrates. Anacardic acid inhibits KAT8 via this mechanism and the inhibition constants of anacardic acid derivatives were calculated. |
Enzyme kinetics, isothermal titration calorimetry (ITC), inhibitor assays |
European journal of medicinal chemistry |
High |
26505788
|
| 2019 |
KAT8 directly interacts with IRF3 via its MYST domain and mediates IRF3 acetylation at lysine 359, inhibiting IRF3 recruitment to IFN-I gene promoters and decreasing its transcriptional activity. KAT8 deficiency in mice protects from viral challenge by enhancing IFN-I production. |
Co-immunoprecipitation, in vitro acetylation assay, ChIP, siRNA screen, mouse viral challenge model |
The Journal of experimental medicine |
High |
30842237
|
| 2023 |
In response to IFNγ, KAT8 undergoes phase separation with IRF1 and forms biomolecular condensates, which promotes IRF1 K78 acetylation and its binding to the PD-L1 (CD274) promoter, enriching transcription apparatus and upregulating PD-L1 mRNA. Multivalency from specific and promiscuous IRF1-KAT8 interactions is required for condensate formation. A blocking peptide (2142-R8) that disrupts KAT8-IRF1 condensate formation inhibits PD-L1 expression and enhances antitumor immunity. |
Phase separation assays, Co-immunoprecipitation, in vitro acetylation assay, ChIP, blocking peptide experiments, in vivo tumor models |
Nature cancer |
High |
36894639
|
| 2014 |
hMOF physically interacts with Nrf2 and acetylates it at Lys588. MOF-mediated acetylation increases nuclear retention of Nrf2 and transcription of its downstream genes. MOF/hMOF is essential for anti-oxidative and anti-drug responses in an Nrf2-dependent manner. |
Co-immunoprecipitation, in vitro acetylation assay, nuclear fractionation, siRNA knockdown, reporter assay, mouse xenograft |
British journal of pharmacology |
High |
24571482
|
| 2013 |
hMOF (KAT8) is responsible for acetylation of DBC1/CCAR2 at K112 and K215. Acetylation of these residues inhibits DBC1-SirT1 binding and increases SirT1 deacetylase activity. After DNA damage, ATM-dependent inhibition of hMOF binding to DBC1 leads to DBC1 deacetylation and increased SirT1-DBC1 binding. A DBC1 acetylation-mimic mutant fails to promote apoptosis after DNA damage. |
Co-immunoprecipitation, in vitro acetylation assay, mutagenesis, DNA damage assays |
Molecular and cellular biology |
High |
24126058
|
| 2016 |
MOF acetyltransferase interacts with LSD1 and is responsible for acetylation of LSD1 in epithelial cells. Acetylation of LSD1 reduces its association with nucleosomes, increasing H3K4 methylation at LSD1 target genes and activating transcription. MOF expression is downregulated by EMT-inducing signals, and MOF depletion enhances EMT and tumor metastasis. |
Co-immunoprecipitation, in vitro acetylation assay, nucleosome association assay, ChIP, siRNA knockdown |
Cell reports |
High |
27292636
|
| 2011 |
SUV420H2-mediated H4K20me3 and hMOF-mediated H4K16ac play opposing roles in RNA Pol II promoter-proximal pausing. H4K16ac promotes release of Pol II from pausing through recruitment of BRD4 and pTEFb. H4K20me3 blocks Pol II escape by locally inhibiting H4K16ac. Combined inhibition of H4K20me3 and DNA methylation results in re-recruitment of hMOF, H4K16ac, and synergistic reactivation of gene expression. |
ChIP, siRNA knockdown, inhibitor treatments, reporter assays |
Molecular and cellular biology |
High |
21321083
|
| 2014 |
MOF (MSL complex) specifically regulates Tsix, the major repressor of Xist lncRNA, in mouse embryonic stem cells. MSL depletion leads to decreased Tsix expression, reduced REX1 recruitment, and consequently enhanced Xist accumulation and variable X-chromosome inactivation during differentiation. The NSL complex provides additional Tsix-independent repression of Xist by maintaining pluripotency. |
ChIP-seq, RNA-seq, siRNA knockdown, allele-specific analysis |
eLife |
High |
24842875
|
| 2021 |
TGFβ activates autophagy via SMAD3-dependent downregulation of MYST1 (KAT8), which regulates expression of core autophagy components ATG7 and BECLIN1 via H4K16 acetylation. Autophagy activation in fibroblasts promotes collagen release and is required to induce tissue fibrosis. Forced expression of MYST1 abrogates TGFβ-stimulated autophagy. |
ChIP, siRNA knockdown, overexpression, mouse fibrosis models, Western blot |
Nature communications |
High |
34285225
|
| 2023 |
MOF (via its KANSL complex) acetylates COX17, a complex IV assembly factor, at a specific residue. Loss of MOF-KANSL complex leads to mitochondrial fragmentation, reduced cristae density, and impaired electron transport chain complex IV integrity. Expression of acetylation-mimetic COX17 rescues these defects even in the absence of MOF, demonstrating that COX17 acetylation is a critical downstream effector of MOF in mitochondrial physiology. |
Co-immunoprecipitation, in vitro acetylation assay, mitochondrial fractionation, electron microscopy, acetylation-mimetic mutant rescue experiments, patient fibroblasts |
Nature metabolism |
High |
37813994
|
| 2024 |
KAT8 acts as a pan-lactyltransferase (Kla writer) capable of installing lysine lactylation on multiple protein substrates. KAT8 specifically lactylates eEF1A2 at K408, boosting translation elongation and protein synthesis contributing to colorectal cancer tumorigenesis. Deletion of KAT8 inhibited CRC tumor growth, especially in high-lactic tumor microenvironments. |
Proteomics/lactylome profiling, co-immunoprecipitation, in vitro lactylation assay, KAT8 deletion mouse models |
Proceedings of the National Academy of Sciences of the United States of America |
High |
38359291
|
| 2017 |
MOF HAT activity is required for MLL-AF9-driven leukemogenesis. Conditional deletion of Mof in MLL-AF9 mouse leukemia model reduced tumor burden and prolonged survival. Rescue experiments with catalytically inactive MOF mutants showed enzymatic activity is required for cancer pathogenicity. MOF loss impaired global H4K16ac and increased γH2AX foci. |
Conditional knockout mouse model, catalytic mutant rescue experiments, RNA-seq, immunofluorescence |
Cancer research |
High |
28202522
|
| 2017 |
KAT8 is essential for mouse oocyte development. Oocyte-specific deletion of Kat8 causes female infertility with follicle development failure. KAT8 deficiency results in significant downregulation of antioxidant genes with consequent ROS increase, which can be rescued by N-acetylcysteine. ChIP assays show KAT8 directly binds promoter regions of antioxidant genes. |
Conditional knockout (Gdf9-Cre), RNA-seq, ChIP, antioxidant rescue experiments (N-acetylcysteine injection) |
Development (Cambridge, England) |
High |
28506985
|
| 2020 |
MOF regulates erythropoiesis by dynamic chromatin recruitment; its haploinsufficiency causes accumulation of a transient HSC population. A regulatory network of MOF, RUNX1, and GFI1B is critical for erythroid fate commitment. GFI1B acts as a Mof activator necessary and sufficient for cell-type-specific induction of Mof expression. Mof-depleted HSC plasticity can be rescued by downstream effector GATA1 or HDAC inhibitor-mediated rebalancing of acetylation. |
Single-cell RNA-seq, ChIP-seq, genetic rescue experiments, HDAC inhibitor treatment |
Science advances |
High |
32671208
|
| 2014 |
MYST1 (KAT8) co-stimulates androgen receptor (AR) and NF-κB functions in prostate cancer cells. NF-κB activation promotes SIRT1-mediated deacetylation of MYST1, and mutually exclusive interactions of MYST1 with SIRT1 vs. AR regulate H4K16ac. MYST1 depletion in AR-lacking cells triggers PARP/caspase-3 cleavage (apoptosis), while in AR-transformed cells it induces CDK N1A/p21 and G2M arrest. |
Co-immunoprecipitation, siRNA knockdown, ChIP, cell cycle analysis, Western blot |
Molecular endocrinology (Baltimore, Md.) |
Medium |
24702180
|
| 2016 |
KAT8 colocalizes with WDR5 at androgen receptor (AR) target genes. PKN1/H3T11 phosphorylation leads to WDR5/MLL methyltransferase recruitment, which then recruits KAT8 to effect H4K16ac and AR-dependent gene activation. KAT8 knockdown significantly decreased AR target gene expression and prostate cancer cell proliferation. |
ChIP, siRNA knockdown, Co-immunoprecipitation, gene expression analysis |
Molecular endocrinology (Baltimore, Md.) |
Medium |
27268279
|
| 2016 |
TET1 forms a chromatin complex with hMOF and Sin3a in mouse embryonic stem cells. TET1 facilitates chromatin affinity and enzymatic activity of hMOF toward H4K16ac by preventing hMOF autoacetylation, thereby regulating expression of downstream genes including DNA repair genes. Tet1 knockout cells show DNA damage accumulation and genomic instability. |
Co-immunoprecipitation, ChIP-seq analysis (integrative genomics), in vitro biochemical studies, Tet1 knockout MEF cells |
Nucleic acids research |
Medium |
27733505
|
| 2018 |
MOF interacts with PCNA at replication forks and affects PCNA ubiquitination and recruitment to DNA damage sites. MOF depletion in cells under replicative stress decreases replication fork speed, increases stalled replication forks, promotes new origin firing, and increases R-loop formation. MOF depletion also compromises DNA end resection and CHK1 phosphorylation. |
Co-immunoprecipitation, DNA fiber assay, PCNA ubiquitination assay, immunofluorescence, siRNA knockdown |
Molecular and cellular biology |
Medium |
29298824
|
| 2020 |
WSTF lysine 426 is acetylated by MOF (via MSL1v1-mediated interaction) and deacetylated by SIRT1. WSTF K426 acetylation promotes WSTF Ser158 phosphorylation, enhancing WSTF kinase and transcriptional regulatory activity and cancer cell proliferation, migration, and invasion. |
Co-immunoprecipitation, in vitro acetylation assay, mutagenesis, cell proliferation and invasion assays |
Oncogene |
Medium |
32518374
|
| 2024 |
USP10 (a deubiquitinase) binds to and deubiquitinates MOF at lysine 410, protecting it from proteasome-dependent degradation. MOF stabilization by USP10 promotes H4K16ac enrichment at the ANXA2 promoter (in a JUN-dependent manner), stimulating ANXA2 transcription and activating Wnt/β-Catenin signaling to facilitate esophageal cancer progression. Catalytically inactive MOF-E350Q fails to promote progression. |
Co-immunoprecipitation, ubiquitination assay, ChIP, catalytic mutant rescue, siRNA knockdown, in vivo tumor models |
Oncogene |
High |
38317006
|
| 2008 |
hMOF-mediated H4K16ac is specifically required for TMS1/ASC gene activity. Downregulation of hMOF or other MSL complex components causes gene-specific decrease in H4K16ac, loss of nucleosome positioning at TMS1, and silencing of TMS1 transcription. Gene silencing induced by H4K16 deacetylation occurs independently of changes in histone methylation and DNA methylation. |
ChIP, siRNA knockdown, bisulfite sequencing, gene expression analysis |
Cancer research |
Medium |
18701507
|
| 2023 |
MOF acetylates PRDX1 (peroxiredoxin 1) at lysine 197, preventing its hyperoxidation and maintaining its peroxidase activity under stress. PRDX1 K197ac decreases in mouse macrophages stimulated with LPS but not IL-4 or IL-10. Loss of K197ac elevates cellular hydrogen peroxide and augments ERK1/2 phosphorylation, stimulating glycolysis, H3S28 phosphorylation, and pro-inflammatory mediator (IL-6) production. |
In vitro acetylation assay, mass spectrometry, macrophage stimulation assays, Western blot, siRNA knockdown |
Cell reports |
Medium |
39207899
|
| 2024 |
KAT8-mediated H4K16ac regulates CDX2 transcription and is essential for trophoblast stem cell self-renewal and proliferation. Trophoblast-specific Kat8 deletion leads to extraembryonic ectoderm abnormalities and embryonic lethality. CDX2 overexpression partially rescues Kat8 knockout defects. Reduced KAT8, CDX2, and H4K16ac are associated with recurrent pregnancy loss in clinical samples, and EX527 (SIRT1 inhibitor) treatment restores CDX2 levels and placental development. |
Conditional knockout, RNA-seq, CUT&Tag, CDX2 rescue experiments, pharmacological rescue with EX527, trophoblast organoids |
Nature communications |
High |
38961108
|
| 2024 |
KAT8 directly lactylates PCK2 (mitochondrial phosphoenolpyruvate carboxykinase 2) at Lys100, augmenting PCK2 kinase activity. PCK2-K100 lactylation competitively inhibits Parkin-mediated polyubiquitination of OXSM, leading to metabolic remodeling of mitochondrial fatty acid synthesis and exacerbating hepatic ferroptosis during ischemia/reperfusion injury. |
In vitro lactylation assay, gene-edited mice, Co-immunoprecipitation, ubiquitination assay |
Advanced science (Weinheim, Baden-Wurttemberg, Germany) |
Medium |
39853940
|
| 2024 |
Mitochondria-localized MOF acetylates ATP5B at K201. Co-regulation of ATP5B K201 acetylation by MOF and SIRT3 impairs mitochondrial respiration and energy metabolism. Overexpression of mitochondria-targeted MOF in mice results in mitochondrial dysfunction, cardiac remodeling, and heart failure. SIRT3 knockout aggravates mtMOF-induced damage. |
Quantitative lysine acetylome analysis (mass spectrometry), conditional overexpression mouse model, SIRT3 knockout, in vitro respiration assays |
Cell reports |
High |
39392752
|
| 2023 |
KAT8-mediated acetylation of YEATS4 at specific residues impairs YEATS4 interaction with HUWE1 (E3 ligase), preventing its ubiquitination and proteasomal degradation, thereby stabilizing YEATS4. KAT8 inhibitor MG149 decreases YEATS4 acetylation, reduces bladder cancer cell viability, and sensitizes cells to cisplatin. |
Co-immunoprecipitation, in vitro acetylation assay, ubiquitination assay, CRISPR-Cas9 screen, KAT8 inhibitor treatment |
Advanced science (Weinheim, Baden-Wurttemberg, Germany) |
Medium |
38526153
|
| 2023 |
KAT8 acetylates HSP90 at K754 as a lysine butyrylation (Kbu) writer, cooperating with HDAC11 as the eraser. SDCBP increases HSP90 K754 butyrylation and stability by competitively binding HDAC11. HSP90 Kbu contributes to 5-FU resistance in esophageal squamous cell carcinoma. |
Butyrylome profiling (mass spectrometry), co-immunoprecipitation, in vitro modification assay, gain/loss-of-function experiments |
Cell discovery |
Medium |
37460462
|
| 2024 |
KAT8 triggers LTBP1 lactylation at lysine 752 (K752) via a KAT8-dependent mechanism in fibroblasts. Lactate (released from PLLA) is taken up via MCT1 and facilitates LTBP1 K752 lactylation, which increases collagen I and collagen III protein levels in fibroblasts. |
Lactylation assays, siRNA knockdown, Co-immunoprecipitation, Western blot |
International journal of biological macromolecules |
Low |
39102921
|
| 2023 |
MOF (KAT8) directly binds promoter regions of Runx2 and Osterix and physically interacts with these osteogenic transcription factors, promoting their transcription via H4K16ac. MOF inhibition (siRNA or MG149 inhibitor) reduces Runx2/Osterix expression and inhibits osteoblast differentiation. |
ChIP, Co-immunoprecipitation, siRNA knockdown, small molecule inhibitor (MG149) |
Cell and tissue research |
Medium |
37247031
|
| 2023 |
hMOF acetylates MDM2, increasing MDM2 stability by inhibiting its ubiquitinated degradation. Increased MDM2 acetylation by hMOF reduces cisplatin-induced p53 accumulation and promotes cisplatin resistance in ovarian cancer cells. Genetic inhibition of MDM2 reverses hMOF-mediated cisplatin resistance. |
Co-immunoprecipitation, ubiquitination assay, Western blot, RNA-seq, siRNA knockdown, xenograft mouse model |
Cell death discovery |
Medium |
37291112
|
| 2017 |
Glioma-induced activation of microglia involves SIRT1 nuclear localization leading to deacetylation of hMOF, which in turn results in hMOF chromatin recruitment at promoter regions of microglial target genes and increased H4K16ac in microglia, promoting a tumor-supporting phenotype. |
Subcellular fractionation, ChIP, siRNA knockdown, cell co-culture model |
Oncoimmunology |
Medium |
29308302
|
| 2017 |
Acetylation of hMOF modulates H4K16ac and DNA repair gene expression in response to oxidative stress. Hydrogen peroxide induces SIRT1, which decreases hMOF chromatin affinity and activity toward H4K16ac, resulting in decreased transcriptional expression of DNA repair genes independent of DNA methylation changes. |
RNA-seq, RRBS-seq, ChIP, siRNA knockdown |
International journal of biological sciences |
Medium |
28808424
|
| 2013 |
KAT8 regulates G2/M cell cycle arrest through AKT/ERK-cyclin D1 signaling. KAT8 inhibition led to p53 induction and subsequently reduced Bcl-2 expression in lung cancer cells. |
RNAi screen, Western blot, flow cytometry, siRNA knockdown |
International journal of clinical and experimental pathology |
Low |
23638218
|
| 2014 |
hMOF regulates the expression of SIRT6 and its downstream genes in hepatocellular carcinoma cells. hMOF knockdown promotes HCC growth while overexpression reduces it, and the effect is mechanistically linked to SIRT6 regulation. |
siRNA knockdown, overexpression, ChIP (implied), in vitro and in vivo tumor growth assays |
Biochemical and biophysical research communications |
Low |
25181338
|
| 2015 |
MOF directly binds and maintains expression of cell cycle progression genes in proliferating cells (via NSL complex) but is dispensable for terminally differentiated podocytes under physiological conditions. Under injury stress, MOF is critical for podocyte maintenance, with genome-wide analysis revealing MOF directly binds lysosome, endocytosis, and vacuole pathway genes. |
Conditional knockout, ChIP-seq, RNA-seq, genome-wide expression analysis |
Oncogene |
Medium |
26387537
|