| 2001 |
PUMA (BBC3) encodes two BH3 domain-containing proteins (PUMA-alpha and PUMA-beta) that bind Bcl-2, localize to the mitochondria to induce cytochrome c release, and activate programmed cell death. Antisense inhibition of PUMA reduced apoptotic response to p53, placing PUMA in the p53→PUMA→Bcl-2/mitochondria→cytochrome c/Apaf-1 pathway. |
Antisense inhibition, co-immunoprecipitation (Bcl-2 binding), mitochondrial localization assay, cytochrome c release assay, apoptosis assay |
Molecular cell |
High |
11463392
|
| 2001 |
BBC3/bbc3 is a direct transcriptional target of p53, transactivated through consensus p53 binding sites within the bbc3 promoter. BBC3 mRNA is also induced by p53-independent stimuli (dexamethasone, serum deprivation) and suppressed by IGF-1 and EGF, indicating regulation by diverse survival signals. |
Promoter reporter assay, p53 binding site analysis, northern blot, growth factor stimulation/deprivation experiments |
Proceedings of the National Academy of Sciences of the United States of America |
High |
11572983
|
| 2003 |
Puma deficiency in mice protects lymphocytes and fibroblasts from DNA damage-induced apoptosis and also protects cells from p53-independent cytotoxic insults (cytokine deprivation, glucocorticoids, staurosporine, phorbol ester), demonstrating Puma is a critical mediator of both p53-dependent and p53-independent apoptosis. |
Puma knockout mouse model, genetic epistasis, apoptosis assays in primary cells |
Science (New York, N.Y.) |
High |
14500851
|
| 2005 |
PUMA couples nuclear and cytoplasmic p53 pro-apoptotic functions via a tripartite complex: Bcl-xL sequesters cytoplasmic p53; nuclear p53 induces PUMA expression; PUMA then displaces p53 from Bcl-xL, allowing cytoplasmic p53 to directly activate mitochondrial permeabilization. Mutant Bcl-xL that bound p53 but not PUMA rendered cells resistant to p53-induced apoptosis. |
Co-immunoprecipitation, mutagenesis of Bcl-xL, genotoxic stress experiments, mitochondrial permeabilization assay |
Science (New York, N.Y.) |
High |
16151013
|
| 2003 |
p73 induces apoptosis by directly transactivating PUMA, which in turn causes Bax mitochondrial translocation and cytochrome c release. DeltaNp73 acts as a dominant negative inhibitor of this PUMA/Bax apoptotic pathway. |
Overexpression of p73 isoforms, PUMA promoter transactivation assay, Bax localization by immunofluorescence, cytochrome c release assay |
The Journal of biological chemistry |
Medium |
14634023
|
| 2009 |
JNK1-dependent phosphorylation of c-Jun mediates PUMA induction during hepatocyte lipoapoptosis. The AP-1 complex containing phospho-c-Jun directly binds the PUMA promoter (confirmed by EMSA and ChIP). PUMA knockdown attenuates Bax activation, caspase 3/7 activity, and cell death. |
Dominant negative c-Jun, ChIP, EMSA, shRNA knockdown, primary murine hepatocytes from Puma-/- mice |
The Journal of biological chemistry |
High |
19638343
|
| 2010 |
CHOP and AP-1 (c-Jun) cooperatively mediate PUMA induction during hepatocyte lipoapoptosis via a CHOP:phospho-c-Jun heteromeric complex that binds the AP-1 consensus sequence within the PUMA promoter; no functional CHOP binding sites were found directly in the PUMA promoter. |
shRNA knockdown of CHOP, co-immunoprecipitation of CHOP with c-Jun, ChIP assay |
American journal of physiology. Gastrointestinal and liver physiology |
Medium |
20430872
|
| 2010 |
BID, BIM, and PUMA are essential for activation of BAX and BAK. Triple-knockout mice (Bid/Bim/Puma) phenocopy Bax/Bak double-knockout developmental defects (persistent interdigital webs, imperforate vaginas), and triple-KO cells fail to homo-oligomerize BAX/BAK or release cytochrome c in response to diverse death signals. |
Triple knockout mouse model, genetic epistasis, cross-linking/immunoblot for BAX/BAK oligomerization, cytochrome c release, caspase activation |
Science (New York, N.Y.) |
High |
21127253
|
| 2009 |
PUMA promotes mitochondrial outer membrane permeabilization (MOMP) through two mechanisms: de-repression (binding anti-apoptotic Bcl-2 proteins to release BAX/BAK) and sensitization. Both mechanisms rely on PUMA binding to anti-apoptotic BCL-2 family members. PUMA cooperates with direct activator proteins (BIM, tBID) to efficiently induce MOMP. |
Reconstituted MOMP assay, protein-protein interaction studies, cell-free system |
Cell cycle (Georgetown, Tex.) |
Medium |
19652530
|
| 2013 |
Puma BH3 domain binds Bak with high affinity (KD = 26 ± 5 nM) by surface plasmon resonance and directly induces Bak homo-oligomerization and membrane permeabilization of liposomes and mitochondria. Mutations that inhibit or enhance Puma BH3 binding to Bak produce corresponding changes in Bak oligomerization, membrane permeabilization, and Bak-mediated cell killing, establishing Puma as a direct Bak activator. |
Surface plasmon resonance, crosslinking/immunoblot for Bak oligomerization, liposome permeabilization assay, site-directed mutagenesis, cell viability assay |
The Journal of biological chemistry |
High |
24265320
|
| 2011 |
Either Puma or Bim can directly activate Bax to cause mitochondrial outer membrane permeabilization. In Puma/Bim double-knockout primary mast cells, there is complete protection from cytokine starvation and DNA damage equivalent to Bax/Bak double KO. ABT-737 treatment of cytokine-deprived cells showed Puma alone is sufficient to activate Bax even without Bim, Bid, or p53. |
Double-knockout mouse models, ABT-737 BH3 mimetic treatment, cytochrome c release assay, mitochondrial membrane permeability assay |
Cell death and differentiation |
High |
22015606
|
| 2011 |
CTCF and the Cohesin complex occupy intragenic chromatin boundaries of the PUMA locus and act as gene-specific repressors. CTCF knockdown leads to increased basal PUMA expression without p53 activation, mediated by changes in histone marks (H3K4me3, H3K9Ac, H3K9me3) at intragenic boundary regions. |
ChIP assay, CTCF knockdown (siRNA), histone modification analysis, RNA analyses |
Genes & development |
Medium |
20478995
|
| 2011 |
IKK1/IKK2/NEMO kinase complex phosphorylates PUMA at serine 10 following serum or IL-3 stimulation. Serine 10 phosphorylation targets PUMA for proteasomal degradation, reducing its stability. Phosphorylated PUMA retains ability to co-immunoprecipitate with anti-apoptotic Bcl-2 family members but is rapidly degraded. |
Co-immunoprecipitation (IKK complex with PUMA), phospho-specific antibody, proteasome inhibitor experiments, IL-3 stimulation |
Cell death and differentiation |
Medium |
21997190
|
| 2015 |
PUMA protein is a bona fide substrate of chaperone-mediated autophagy (CMA): PUMA associates with HSPA8/HSC70 leading to lysosomal translocation and degradation. IKKβ-mediated phosphorylation of PUMA at Ser10 stabilizes PUMA by blocking CMA-dependent degradation and facilitates PUMA translocation from cytosol to mitochondria, promoting TNF-induced apoptosis. |
Co-immunoprecipitation (PUMA-HSC70), lysosome fractionation, CMA inhibition, site-directed mutagenesis (Ser10), subcellular fractionation |
Autophagy |
Medium |
26212789
|
| 2018 |
PUMA is transcriptionally activated in an RIP3/MLKL-dependent manner during necroptosis via autocrine TNF-α and NF-κB signaling. Induced PUMA promotes cytosolic release of mitochondrial DNA and activates DNA sensors DAI/ZBP1 and STING, leading to enhanced RIP3 and MLKL phosphorylation in a positive feedback loop that amplifies necroptotic death. |
RIP3/MLKL knockout cells, PUMA-deficient cells, mitochondrial DNA release assay, STING/DAI knockdown, RIP3/MLKL phosphorylation assay |
Proceedings of the National Academy of Sciences of the United States of America |
Medium |
29581256
|
| 2008 |
PUMA mediates radiation-induced apoptosis in intestinal progenitor and stem cells in a p53-dependent manner through the mitochondrial pathway. PUMA-deficient mice show blocked apoptosis in intestinal crypt progenitor/stem cells, enhanced regeneration, and prolonged survival after lethal radiation doses. PUMA deficiency had little effect on radiation-induced intestinal endothelial apoptosis. |
Puma knockout mouse model, p53 dependence analysis, mitochondrial pathway assay, TUNEL staining, antisense oligonucleotide knockdown |
Cell stem cell |
High |
18522850
|
| 2013 |
PUMA and BIM are key apoptotic effectors of tyrosine kinase inhibitors (TKIs) in HER2-amplified breast cancer and EGFR-mutant lung cancer. MEK-ERK pathway inhibition increases BIM abundance; PI3K-AKT pathway inhibition triggers FOXO transcription factor nuclear translocation to directly activate the PUMA promoter. Deficiency of Puma impairs TKI-induced tumor regression in vivo. |
Signal pathway inhibitors, FOXO nuclear translocation assay, PUMA promoter reporter, Puma/Bim-deficient mouse tumor models, caspase activation assay |
Science signaling |
High |
23532334
|
| 2010 |
BBC3/Puma deficiency rescues adult stem cells from p53-dependent apoptosis in a constitutively active p53 knock-in mouse model (T21D/S23D), preventing depletion of stem cells in bone marrow, brain, and testes and rescuing segmental progeria. |
Puma knockout mice crossed with phosphomimetic p53 knock-in mice, stem cell enumeration, genetic epistasis |
Nature cell biology |
High |
20818388
|
| 2016 |
MYSM1 protein associates with p53 and co-localizes to the BBC3/PUMA and CDKN1A/p21 promoters, antagonizing p53-driven expression by modulating local histone modifications (H3K27ac, H3K4me3) and p53 recruitment. PUMA (not p21) is the essential non-redundant effector of p53-induced multipotent progenitor apoptosis downstream of MYSM1 loss. |
Co-immunoprecipitation (MYSM1-p53), ChIP (histone marks, p53 recruitment), Mysm1/Puma double-knockout mice, transcriptome analysis |
Cell death and differentiation |
High |
26768662
|
| 2008 |
Sp1 binding to the PUMA promoter increases upon serum starvation and is required for PUMA induction (Sp1 inhibition abrogates it). p73 is upregulated by serum starvation and mediates PUMA induction through the p53-binding sites in the PUMA promoter. Sp1 and p73β cooperatively activate PUMA transcription in a PI3K/AKT-inhibitable manner. |
ChIP (Sp1 binding), promoter inhibitor assays, p73 knockdown, PI3K/AKT inhibitors |
Carcinogenesis |
Medium |
18579560
|
| 2014 |
HDAC3 binds the PUMA promoter and represses PUMA expression in gastric cancer cells. HDAC3 knockdown (but not other HDACs) upregulates PUMA expression, and HDAC3 inhibition by TSA promotes p53 interaction with the PUMA promoter, de-repressing PUMA. |
ChIP (HDAC3 binding to PUMA promoter), siRNA knockdown of individual HDACs, TSA treatment, promoter reporter assay |
Journal of molecular medicine (Berlin, Germany) |
Medium |
22763818
|
| 2011 |
BBC3/PUMA (but not BIM or BID) is required for BAX-dependent developmental apoptosis of retinal ganglion cells, bipolar cells, and dopaminergic amacrine cells; Bbc3-deficient mice have increased numbers of the same cell types as Bax-deficient mice. BBC3 was not a primary factor in BAX-dependent axonal injury-induced neurodegeneration in adult retinal ganglion cells. |
Bbc3 knockout mouse, cell-type specific counting, genetic comparison with Bax-/-, Bim-/-, Bid-/- mice |
Molecular neurodegeneration |
Medium |
21762490
|
| 2015 |
MCL-1 promotes hematopoietic stem/progenitor cell survival during stress by inhibiting PUMA. Mcl-1+/-;Puma-/- double mutant mice are completely protected from myeloablative challenge, identifying PUMA inhibition as the key mechanism of MCL-1's survival function in this context. |
Mcl-1 heterozygous and Puma knockout mouse models, hematopoietic recovery assays, bone marrow transplantation |
Blood |
Medium |
25847014
|
| 2013 |
PUMA suppresses iPSC generation in a p53-dependent manner by promoting apoptosis (not cell cycle arrest). PUMA deficiency leads to better survival with reduced DNA damage and fewer chromosomal aberrations during reprogramming, distinguishing PUMA from p21 (which causes opposite chromosomal outcomes when deleted). |
Puma-/- and p21-/- mouse strains, iPSC reprogramming efficiency, DNA damage assays, chromosomal aberration analysis |
Nature communications |
Medium |
23873265
|
| 2014 |
Slug (SNAI2) directly represses the Puma (Bbc3) gene, suppressing apoptosis in metastatic carcinoma cells. Slug knockdown increases Puma expression, and Puma inhibition by RNAi rescues lung colonization in Slug-knockdown cells, establishing a direct Slug→PUMA repression axis in tumor cell survival during metastasis. |
shRNA knockdown, ChIP (Slug binding to Puma promoter implied by direct repression), lung colonization assay, rescue experiments |
Cancer research |
Medium |
24830722
|
| 2010 |
Puma is metabolically regulated downstream of p53: glucose deprivation or growth factor withdrawal induces Puma via p53 activation; maintained glucose uptake (via Glut1 overexpression) suppresses Puma induction, Bax activation, and cell death. Puma regulation involves combined p53-dependent transcription and control of Puma protein stability (degraded in nutrient-replete conditions). |
Glut1 overexpression, glucose deprivation, p53-/- and Puma-/- primary T lymphocytes, Bax activation assay, DNA fragmentation |
The Journal of biological chemistry |
Medium |
18990690
|
| 2010 |
Akt-mediated glycolysis suppresses Puma expression; Puma is uniquely sensitive to metabolic status among pro-apoptotic Bcl-2 family members. Alternative mitochondrial fuels suppress Puma induction, indicating mitochondrial metabolites regulate Puma. Puma deficiency rescues cells from glucose deprivation-induced death, and Akt cannot readily block Puma-mediated apoptosis once Puma is expressed. |
Constitutively active Akt expression, glucose deprivation, Puma-/- cells, metabolic substrate supplementation, protein stability assays |
The Journal of biological chemistry |
Medium |
21159778
|
| 2014 |
Regorafenib induces PUMA in colorectal cancer cells irrespective of p53 status through the NF-κB pathway following ERK inhibition and GSK3β activation. PUMA is necessary for regorafenib-induced apoptosis, antiangiogenic effects, and antitumor activity in vivo. |
PUMA-/- HCT116 cells, NF-κB pathway inhibition, xenograft tumor model, apoptosis assays |
Clinical cancer research |
Medium |
24763611
|
| 2014 |
Aurora kinase inhibition induces PUMA via the canonical NF-κB pathway (p65) following AKT inhibition, independent of p53 status. PUMA is required for mitochondria-mediated apoptosis induced by aurora kinase inhibitors; PUMA deficiency increases polyploidy and improves cell survival. |
siRNA knockdown of aurora kinases, small molecule inhibitors, PUMA-/- cells, NF-κB p65 activation assays |
Molecular cancer therapeutics |
Medium |
24563542
|
| 2017 |
BBC3/PUMA LC3-interacting region (LIR) at its C-terminal end interacts with LC3 to stimulate mitophagy. PUMA is also ubiquitinated and interacts with p62 to promote mitophagy, indicating PUMA-mediated mitophagy occurs in both p62-dependent and p62-independent manner. |
Co-immunoprecipitation (PUMA-LC3, PUMA-p62), gain and loss of function of PUMA, ubiquitination assay, mitophagy assay |
Biochimica et biophysica acta. Molecular cell research |
Medium |
29229477
|
| 2006 |
PUMA-mediated apoptosis in fibroblast-like synoviocytes does not require p53: PUMA cDNA transfection induces apoptosis equally in p53-deficient (siRNA-depleted or dominant-negative) human FLS and p53-/- murine FLS. |
p53 siRNA, dominant-negative p53, p53-/- murine FLS, PUMA cDNA transfection, caspase-3 activation, ELISA for histone release |
Arthritis research & therapy |
Medium |
17014719
|
| 2012 |
PUMA has an unexpected pro-angiogenic function: Puma deficiency inhibits developmental and pathological angiogenesis and reduces microglia numbers in vivo. Mechanistically, PUMA regulates autophagy by modulating ERK activation and intracellular calcium levels in vascular/microglia cells. |
Puma knockout mice, shRNA knockdown, in vivo angiogenesis assays, ERK activation assay, calcium measurement |
Cell reports |
Medium |
23122957
|
| 2017 |
BBC3/PUMA promotes autophagy in macrophages exposed to SiO2; knockdown of BBC3 decreases SiO2-induced autophagy, macrophage activation, and apoptosis. In Bbc3 knockout mice, decreased autophagy and reduced fibrosis progression were observed in silicosis models. |
BBC3 siRNA knockdown, autophagy inhibitor (3-MA), rapamycin, Bbc3 knockout mice, conditioned medium experiments |
Cell death & disease |
Medium |
28277537
|
| 2006 |
Puma and Noxa differentially participate in p53-induced MOMP: In normal cells, Puma (but not Noxa) induces MOMP partly via calcium release from the ER and subsequent caspase activation. Upon E1A expression, cells become susceptible to MOMP induction by Noxa via an ER-independent pathway. |
Puma-/- and Noxa-/- cells, E1A expression, ER calcium release assay, MOMP measurement |
The EMBO journal |
Medium |
17024184
|
| 2020 |
Loss of PUMA (BBC3) completely preserves primordial follicles following cyclophosphamide or cisplatin treatment in mice. TAp63 mediates PUMA-dependent oocyte apoptosis in response to cisplatin but not cyclophosphamide, indicating mechanistic differences between chemotherapy agents. |
Puma-/- and TAp63-/- mouse models, follicle counting, fertility testing, offspring health assessment |
Cell death & disease |
High |
29795269
|
| 2011 |
6-OHDA-induced dopaminergic neuron death requires Puma and p53: p53 and DNA damage (not UPR/ATF3) mediate 6-OHDA-induced Puma upregulation and cell death. Puma-null primary midbrain cultures and mice show protection from 6-OHDA-induced death. |
Puma-/- mice, primary midbrain cultures, in vivo 6-OHDA injection, ATF3-/- comparison, DNA damage assays |
Molecular neurodegeneration |
Medium |
21211034
|