| 2008 |
Arsenic trioxide induces PML SUMOylation, which triggers Lys48-linked polyubiquitination of PML and recruits RNF4 (the human orthologue of the yeast SUMO-dependent E3 ubiquitin ligase) to PML nuclear bodies, leading to proteasome-dependent degradation of PML and PML-RARα. SUMOylated PML also recruits ubiquitin and proteasomes onto PML nuclear bodies. A dominant-negative RNF4 impairs arsenic-induced differentiation, directly implicating PML-RARα catabolism in the therapeutic response. |
Co-immunoprecipitation, dominant-negative RNF4 expression, SUMOylation mutant analysis, ubiquitination assays, cell differentiation assays |
Nature cell biology |
High |
18408733
|
| 2008 |
PML nuclear bodies coordinate PTEN localization by opposing the deubiquitylating enzyme HAUSP/USP7 through a mechanism involving the adaptor protein DAXX. PML opposes HAUSP-mediated deubiquitylation of PTEN, which is required for PTEN nuclear entry. This PML-DAXX-HAUSP network controls PTEN subcellular trafficking and is disrupted by the PML-RARα oncoprotein. |
Co-immunoprecipitation, knockdown/knockout studies, ubiquitylation assays, nuclear/cytoplasmic fractionation, rescue experiments with ATRA/arsenic trioxide |
Nature |
High |
18716620
|
| 2004 |
Cytoplasmic PML isoforms are essential modulators of TGF-β signaling. Cytoplasmic PML physically interacts with Smad2/3 and SARA (Smad anchor for receptor activation) and is required for Smad2/3 phosphorylation, nuclear translocation, SARA association, and accumulation of SARA and TGF-β receptor in early endosomes. PML-null primary cells are resistant to TGF-β-dependent growth arrest, senescence, and apoptosis. |
Co-immunoprecipitation, Pml-null primary cell phenotyping, Smad2/3 phosphorylation assays, endosomal fractionation, cytoplasmic PML expression rescue |
Nature |
High |
15356634
|
| 2006 |
PML inhibits HIF-1α synthesis under hypoxic conditions by repressing mTOR. PML physically interacts with mTOR and negatively regulates mTOR association with the small GTPase Rheb by promoting mTOR nuclear accumulation. Pml−/− cells and tumours display higher sensitivity to rapamycin and lack of PML inversely correlates with phosphorylation of ribosomal protein S6. |
Co-immunoprecipitation (PML-mTOR), Pml-null cell/tumour analysis, rapamycin sensitivity assays, subcellular fractionation showing mTOR nuclear accumulation, in vivo tumour models |
Nature |
High |
16915281
|
| 2000 |
PML physically interacts with p53 both in vitro and in vivo, co-localizes with p53 in PML nuclear bodies, and acts as a transcriptional co-activator for p53. PML-dependent p53-DNA binding activity, p53 transcriptional activation, and induction of p53 target genes (Bax, p21) upon gamma-irradiation are all impaired in Pml−/− primary cells. |
In vitro GST pulldown, co-immunoprecipitation in vivo, co-localization by immunofluorescence, Pml−/− cell apoptosis and transcription assays, gamma-irradiation |
Nature cell biology |
High |
11025664
|
| 1998 |
PML function is essential for the tumor-growth-suppressive activity of retinoic acid (RA) and for RA-induced terminal myeloid differentiation. PML is required for RA-dependent transactivation of the p21WAF1/CIP1 gene, placing PML as a critical component of the RA signaling pathway. |
Homologous recombination knockout of murine PML, hematopoietic differentiation assays, RA-dependent p21 transactivation assays, tumorigenesis assays |
Science |
High |
9488655
|
| 2001 |
PML interacts with multiple corepressors (c-Ski, N-CoR, mSin3A) and histone deacetylase 1, and this interaction is required for transcriptional repression mediated by the tumor suppressor Mad. PML-RARα, which has two corepressor-interacting sites, inhibits Mad-mediated repression, suggesting aberrant binding to corepressor complexes contributes to leukemogenesis. |
Co-immunoprecipitation, transcriptional reporter assays, domain mapping |
Molecular cell |
Medium |
11430826
|
| 1998 |
PML colocalizes with the non-phosphorylated fraction of the retinoblastoma protein (pRB) in nuclear bodies. Both PML and PML-RARα form complexes with the non-phosphorylated form of pRB in vivo and interact with the pRB pocket region. The B boxes and C-terminal region of PML are essential for stable complex formation. PML abolishes glucocorticoid receptor-regulated transcription activation by pRB. |
Co-immunoprecipitation, co-localization immunofluorescence, domain deletion mutant analysis, transcriptional reporter assays |
Molecular and cellular biology |
Medium |
9448006
|
| 2002 |
The DNA damage checkpoint kinase hCds1/Chk2 mediates gamma irradiation-induced apoptosis in a p53-independent manner through an ATM-hCds1/Chk2-PML pathway. PML functions downstream of ATM-hCds1/Chk2 in this pathway, defining PML's role in the p53-independent apoptotic arm of the DNA damage response. |
Genetic epistasis in cell lines, gamma irradiation apoptosis assays, kinase activity assays, PML-null cell studies |
Nature cell biology |
Medium |
12402044
|
| 2003 |
PML physically interacts with MDM2 in vivo and in vitro through two separate regions: PML residues 300–633 interact with the MDM2 acidic domain, and PML residues 1–200 (RING/B-box region) interact with the MDM2 C-terminal RING domain. MDM2 coexpression redistributes PML from nucleus to cytoplasm via interaction with the PML N-terminus and MDM2 RING domain. MDM2 inhibits PML-stimulated transcriptional activation of CBP. PML SUMOylation at K160 negatively regulates PML-MDM2 binding. |
Co-immunoprecipitation in vivo, GST pulldown in vitro, domain deletion mutants, subcellular fractionation, transcriptional reporter assays |
The Journal of biological chemistry |
Medium |
12759344
|
| 2008 |
PML activates transcription by protecting HIPK2 and p300 from SCFFbx3-mediated ubiquitin-proteasomal degradation. PML forms a complex containing Fbx3, Skp1, and Cullin1 (SCFFbx3 ubiquitin ligase). PML inhibits degradation of HIPK2 and p300 without inhibiting their ubiquitination, and PML/Fbx3/HIPK2 synergistically activate p53-induced transcription. PML-RARα instead promotes HIPK2 degradation. |
PML complex purification and mass spectrometry identification, co-immunoprecipitation, ubiquitination assays, transcriptional reporter assays, proteasome inhibitor studies |
Molecular and cellular biology |
Medium |
18809579
|
| 2008 |
HDAC7 promotes PML SUMOylation essential for PML nuclear body formation. HDAC7 associates with the SUMO E2 ligase Ubc9 and stimulates PML SUMOylation in vitro, acting with SUMO E3 ligase-like activity. HDAC7 knockdown reduces PML nuclear body size and number and inhibits TNF-α-induced PML SUMOylation in HUVECs. |
HDAC7 knockdown (siRNA), in vitro SUMOylation assay, co-immunoprecipitation, immunofluorescence of PML bodies |
Molecular and cellular biology |
Medium |
18625722
|
| 2000 |
PML is critical for proper localization of all other ND10/PML-body-associated proteins. Introducing PML into PML−/− cells recruits ND10-associated proteins (including Daxx, Sp100) into de novo formed ND10 bodies. Increased SUMO-1 modification of PML segregates Daxx from condensed chromatin to ND10, demonstrating that SUMO-1 modification of PML controls recruitment of partner proteins. |
Transient transfection in PML−/− cells, cell fusion experiments, immunofluorescence, SUMO-1 overexpression |
Journal of structural biology |
Medium |
10806078
|
| 1999 |
PML and Sp100 are conjugated to SUMO-1 during interphase but become de-conjugated during mitosis. A mitosis-specific PML isoform of distinct electrophoretic mobility appears that is stabilized by phosphatase inhibitors, indicating phosphorylation is an important modifier of PML during the cell cycle. Treatment with phosphatase inhibitors in interphase cells induces PML isoforms resembling the mitotic form and causes structural changes in ND10. |
Cell cycle synchronization, immunoblotting for SUMO-1-conjugated PML, phosphatase inhibitor treatment, immunofluorescence of PML bodies |
Journal of cell science |
Medium |
10574707
|
| 2000 |
PML nuclear body core is a dense, protein-based structure (~250 nm diameter) that does not contain detectable nucleic acid (no RNA or chromatin). Newly synthesized RNA is associated with the periphery of PML nuclear bodies, not within the protein core. These bodies are not sites of transcription. |
Electron spectroscopic imaging (ESI) analytical transmission electron microscopy, 5-bromouridine RNA labeling |
The Journal of cell biology |
High |
10648561
|
| 2008 |
PML and YAP physically interact through PML's PVPVY motif and YAP's WW domain. PML-mediated SUMOylation stabilizes YAP. PML is a direct transcriptional target of p73/YAP, forming a proapoptotic autoregulatory feedback loop. Akt/PKB kinase negatively controls PML transcriptional activation by p73/YAP. |
Co-immunoprecipitation, domain mutant analysis (PVPVY/WW), SUMOylation assays, transcriptional reporter assays, Akt inhibitor studies |
Molecular cell |
Medium |
19111660
|
| 2002 |
PML forms a complex with STAT3 through its B-box and C-terminal regions in vitro and in vivo, inhibiting STAT3 DNA-binding activity. PML-RARα dissociates PML from STAT3 and restores STAT3 activity. In cells dependent on gp130/STAT3-mediated growth, PML abrogates proliferation while PML-RARα enhances it. |
Co-immunoprecipitation, GST pulldown, luciferase transcription assays, EMSA for STAT3 DNA binding, Ba/F3 cell growth assays |
Blood |
Medium |
12506013
|
| 2003 |
ZIP kinase (ZIPK) is present in PML nuclear bodies (PODs) and colocalizes with and binds to proapoptotic protein Daxx. Arsenic trioxide and IFN-γ increase the association of ZIPK with PODs. Kinase-inactive ZIPK has diffuse nuclear localization and prevents Daxx association with PODs, indicating ZIPK recruits Daxx via its catalytic activity. ZIPK also binds and phosphorylates Par-4; siRNA knockdown of ZIPK, Daxx, or Par-4 decreases caspase activation and apoptosis induced by arsenic/IFN-γ. |
Co-immunoprecipitation, immunofluorescence co-localization, kinase-dead mutant analysis, siRNA knockdown, caspase activity assays |
Molecular and cellular biology |
Medium |
12917339
|
| 2010 |
PML isoforms I and II partially restore restriction of ICP0-null mutant HSV-1 replication in PML-depleted cells. The antiviral activity of PML isoform I requires its SUMO modification, its SUMO interaction motif (SIM), and each element of its TRIM domain. Deletion of the SIM motif from PML isoform I increases colocalization with other major ND10 components. |
Individual PML isoform expression in PML-depleted cells, viral plaque assays, SUMO modification site mutagenesis, SIM deletion mutants, immunofluorescence |
Journal of cell science |
Medium |
21172801
|
| 2010 |
SIRT1 stabilizes PML protein and stimulates PML SUMOylation in vitro and in vivo in a deacetylase-independent manner. SIRT1 knockdown reduces PML protein levels, PML nuclear body size and number. SIRT1 absence reduces the apoptotic response to VSV infection and favors PML-sensitive virus replication. |
In vitro SUMOylation assay, SIRT1 knockdown (shRNA/siRNA), SIRT1 knockout MEFs, immunofluorescence of PML bodies, viral replication assay |
Cell death and differentiation |
Medium |
20577263
|
| 2011 |
PML induces a permanent cell cycle exit and activates p53 and senescence by recruiting E2F transcription factors (bound to their promoters) and Rb proteins to PML nuclear bodies enriched in heterochromatin proteins and protein phosphatase 1α. Blocking Rb family function or adding back E2Fs rescues E2F-dependent gene expression and proliferation, inhibiting the senescent phenotype. |
Immunoprecipitation, immunofluorescence, chromatin immunoprecipitation (ChIP), Rb functional blockade, E2F rescue experiments, cell proliferation assays |
Genes & development |
Medium |
21205865
|
| 2012 |
PML protein physically interacts with PER2 and is expressed in a circadian manner in the suprachiasmatic nucleus (SCN). Loss of PML disrupts expression of clock regulators (Per2, Per1, Cry1, Bmal1, Npas2), and in Pml−/− cells PER2 distribution is primarily perinuclear/cytoplasmic rather than nuclear. PML is acetylated at K487, and its deacetylation by SIRT1 promotes PML control of PER2 nuclear localization. In Pml−/− mice, circadian period shows reduced precision and stability. |
Co-immunoprecipitation (PML-PER2), Pml−/− mouse circadian phenotyping, immunofluorescence/subcellular fractionation of PER2, acetylation site mutagenesis (K487), SIRT1 deacetylation assay |
The EMBO journal |
Medium |
22274616
|
| 2015 |
PML/TRIM19 inhibits retroviral (HIV-1) reverse transcription indirectly through stabilization of Daxx. In the presence of PML, cytoplasmic Daxx is found in the vicinity of incoming HIV-1 capsids and inhibits reverse transcription. HIV-1 infection triggers formation of PML cytoplasmic bodies within 30 min, peaking at ~2 h post-infection. PML re-localization is blocked by reverse-transcription inhibitors. |
PML knockdown (siRNA), quantitative RT-PCR of HIV cDNA intermediates, immunofluorescence of PML cytoplasmic bodies, reverse-transcription inhibitor treatment, Daxx depletion experiments |
PLoS pathogens |
Medium |
26566030
|
| 2011 |
PML is functionally connected to the homologous recombination (HR) repair machinery. PML depletion abrogates Rad51, Mre11, BRCA1, and RPA foci following DNA damage. PML associates with Rad51 following LT expression or external DNA damage. PML-depleted cells fail to generate ssDNA foci or activate Chk1 upon gamma-irradiation, indicating PML is required for DSB processing. PML is also required for HR-mediated repair as measured by a direct HR assay. |
PML knockdown (siRNA), immunofluorescence for DNA repair foci, Co-immunoprecipitation (PML-Rad51), HR reporter assay, BrdU incorporation (ssDNA detection), Chk1 phosphorylation assay |
PloS one |
Medium |
21998700
|
| 2018 |
PML acts as a reactive oxygen species (ROS) sensor. Pml−/− cells accumulate ROS, whereas PML expression decreases ROS levels. Pml−/− animals fail to properly activate oxidative stress-responsive p53 targets, while the NRF2 response is amplified. In an oxidative stress-prone background, Pml−/− animals display a longevity phenotype reflecting decreased basal p53 activation. PML couples ROS sensing to p53 responses through NB biogenesis. |
Pml−/− mouse models, ROS measurement assays, p53 target gene induction assays, acetaminophen hepatotoxicity model, fasting-induced steatosis model, glutathione depletion experiment |
The Journal of experimental medicine |
Medium |
28931625
|
| 2019 |
PML RBCC domain undergoes sequential oligomerization (monomer → dimer → tetramer → N-mer) mediated by B1-box interfaces (W157, F158, SD1). Crystal structure of PML B1-box at 2.0 Å resolution and SAXS characterization define these interfaces. B1 interface mutations abolish PML SUMOylation and nuclear body biogenesis in HeLaPml−/− cells. In vivo, PML-RARα F158E mutation (disrupting B1 oligomerization) precludes leukemogenesis in transgenic mice. |
Crystal structure (2.0 Å), SAXS, gel filtration, ultracentrifugation, B1 interface mutagenesis, PML nuclear body reconstitution in HeLaPml−/− cells, transgenic mouse leukemogenesis model, single-cell RNA sequencing |
Nature communications |
High |
31439836
|
| 2017 |
WDR4-containing CRL4WDR4 ubiquitin ligase mediates PML ubiquitination and degradation. This pathway is hyperactivated in lung cancer. The WDR4/PML axis induces CD73, uPAR, and SAA2 to elicit paracrine effects promoting migration, invasion, and metastasis. In vivo, this axis elevates intratumoral Tregs and M2-like macrophages and reduces CD8+ T cells. |
Co-immunoprecipitation, ubiquitination assays, WDR4 knockdown/overexpression, xenograft and genetically engineered mouse models, CD73 blockade rescue |
The Journal of clinical investigation |
Medium |
28691927
|
| 2010 |
Overexpression of nuclear PML isoforms (I–VI) in human cells increases IFN-γ-induced STAT1 phosphorylation, enhances STAT1 DNA binding, activates IFN-stimulated genes, and increases their protein products. These effects require PML nuclear localization, PML SUMOylation, and the RING finger domain. Conversely, PML knockdown or PML−/− MEFs show decreased IFN-γ-induced STAT1 phosphorylation and STAT1 DNA-binding activity. |
PML isoform overexpression, PML siRNA knockdown, PML−/− MEF analysis, STAT1 phosphorylation assays, EMSA for STAT1 DNA binding, ISG expression assays, SUMOylation mutant analysis |
Biochimie |
Medium |
21115099
|
| 2018 |
PML physically binds TET2 via its C-terminal domain and recruits TET2 to PML-positive nuclear bodies, promoting 5-hydroxymethylcytosine (5hmC) formation in response to chemotherapeutic agents. PML-RARA (missing the PML C-terminal domain) disrupts this interaction. Knockout of PML abolishes doxorubicin-promoted DNA modification. |
SILAC immunoprecipitation-mass spectrometry, co-immunoprecipitation, PML KO cells, 5hmC quantification, domain-deletion mutant analysis |
Cancer research |
Medium |
29735542
|
| 2017 |
PML undergoes oxidation-mediated multimerization and de-SUMOylation in response to Listeria monocytogenes infection via the pore-forming toxin listeriolysin O (LLO). This de-SUMOylation is sensed as a danger signal leading to restriction of bacterial intracellular multiplication. Specific induction of PML de-SUMOylation phenocopies the LLO-induced antibacterial response. |
PML oxidation/multimerization assays, SUMOylation immunoblotting, LLO-deficient Listeria mutant comparison, PML de-SUMOylation induction, transcriptomic and proteomic microarrays, Pml−/− cell infection assays |
mBio |
Medium |
28074026
|
| 2018 |
IFN-α treatment increases global cellular SUMOylation in a PML-dependent manner. This effect is orchestrated specifically by PML isoforms III and IV. IFN-α induces PML-dependent transfer of the SUMO E2 enzyme UBC9 to the nuclear matrix where it colocalizes with PML in nuclear bodies and enhances global SUMOylation. |
Large-scale SUMO proteomics (mass spectrometry), individual PML isoform expression in PML-negative cells, UBC9 nuclear matrix fractionation, immunofluorescence co-localization |
Molecular & cellular proteomics |
Medium |
29535160
|
| 2011 |
PML physically interacts with TBX2 (a T-box transcription factor) and negatively regulates TBX2 expression. Recruitment of PML to the TBX2 promoter depends on a functional p130/E2F4 repressor complex, implementing transcriptionally inactive chromatin at the TBX2 promoter. TBX2 depletion triggers PML pro-senescence functions; elevated TBX2 antagonizes PML pro-senescence function through direct protein-protein interaction. |
ChIP, gene expression profiling, promoter reporter assay, co-immunoprecipitation, TBX2 knockdown and overexpression, senescence assays |
The EMBO journal |
Medium |
22002537
|
| 1991 |
The MYL/PML-RARα fusion protein encoded by the t(15;17) translocation of APL includes RAR-α DNA- and retinoid-binding regions but lacks the RAR-α N-terminal A/B transactivation domain. The fusion protein acts as a retinoid-inducible transcription factor with ligand-independent repressor and ligand-dependent activator functions, and has ~10-fold greater affinity for RA than RARα alone. |
cDNA cloning and sequencing, retinoid-binding assays, transactivation reporter assays |
Oncogene |
Medium |
1650447
|
| 1998 |
PML overexpression induces rapid cell death independent of de novo transcription, caspase-3 activation, or cell cycling. BAX and p27KIP1 are novel PML nuclear body-associated proteins recruited by PML. Arsenic enhances targeting of PML, BAX, and p27KIP1 to nuclear bodies and synergizes with PML and IFN to induce cell death. Caspase inhibitors (zVAD) accelerate PML-induced death. |
PML overexpression in multiple cell lines, immunofluorescence for BAX/p27KIP1 localization at NBs, caspase inhibitor treatment, arsenic trioxide treatment, cell death assays |
Nature genetics |
Medium |
9806544
|
| 2022 |
PML/RARα is neddylated in its RARα moiety; this neddylation enhances DNA-binding ability of PML/RARα and impedes phase separation of the PML moiety, disrupting PML nuclear body assembly. Deneddylation of PML/RARα restores its phase separation to reconstruct functional PML nuclear bodies and activates RARα signaling, suppressing leukemogenesis. Pharmacological neddylation inhibition by MLN4924 eradicates APL cells in vitro and in vivo. |
Neddylation site identification, DNA-binding assays, phase separation assays, PML NB reconstitution, MLN4924 treatment in vitro and in APL mouse models |
Cell death and differentiation |
Medium |
35194189
|
| 2008 |
UBE1L (ubiquitin-activating enzyme E1-like) induces ISG15 conjugation (ISG15ylation) of the PML domain of PML/RARα, causing its repression and degradation via the proteasome. This is mechanistically distinct from RA-induced RARα-domain targeting. USP18/UBP43 (the ISG15 deconjugase) opposes UBE1L-dependent (but not RA-dependent) PML/RARα degradation. |
Domain-specific transfection assays, ISG15ylation assays, proteasome inhibitor studies, USP18 rescue experiments |
Molecular cancer therapeutics |
Medium |
18413804
|