| 2008 |
Human PUM1 binds a core consensus sequence UGUAHAUA in the 3' UTRs of associated mRNAs; PUM1 knockdown demonstrated it enhances decay of associated mRNAs; PUM1 relocalizes to stress granules, consistent with a role in translational repression. Associated mRNAs are enriched for transcriptional regulators and cell cycle/proliferation genes. |
Ribonomic analysis (RIP-chip), genome-wide mRNA target identification, PUM1 knockdown, stress granule localization by imaging |
Molecular and cellular biology |
High |
18411299
|
| 2018 |
Missense mutations in PUM1 reduce PUM1 protein levels (~25% in adult-onset, ~50% in infantile-onset cases), causing proportional upregulation of known PUM1 target mRNAs (including ATXN1), linking PUM1 haploinsufficiency to neurodegenerative and neurodevelopmental phenotypes. PUM1 functions as a post-transcriptional repressor whose dosage directly controls downstream target protein levels. |
Patient-derived cell studies, western blot, target mRNA/protein quantification in cells from individuals with PUM1 deletions or de novo missense variants |
Cell |
High |
29474920
|
| 2019 |
PUM1 and PUM2 repress translation of CDKN1B (p27) by binding Pumilio binding elements (PBEs) in the CDKN1B 3' UTR, promoting G1-S transition and cell proliferation. Pum1/Pum2 double-null mice show gene dosage-dependent body/organ size reductions rescued by Cdkn1b deficiency. PUM1 and PUM2 also engage in auto-regulatory and reciprocal post-transcriptional repression of each other. |
Mouse knockout genetics, translational reporter assays, epistasis (Pum1-/- x Cdkn1b-/- rescue), 3'UTR PBE binding assays |
Cell reports |
High |
30811992
|
| 2022 |
PUM1 binds to the 3' UTR of TLR4 mRNA and suppresses TLR4 mRNA translation, thereby regulating NF-κB activity in human mesenchymal stem cells. PUM1 overexpression protects MSCs against H2O2-induced senescence and inflammation by suppressing TLR4-mediated NF-κB signaling. |
3'UTR binding assays, PUM1 overexpression/knockdown, western blot, NF-κB activity assay, in vivo OA mouse model with lentiviral PUM1 gene therapy |
Cell death and differentiation |
High |
35034101
|
| 2017 |
PUM1 acts as a biphasic negative regulator of innate immunity genes by repressing LGP2 expression. PUM1 knockdown triggers an initial upregulation of LGP2, CXCL10, IL6, and PKR (phase 1), followed by upregulation of RIG-I, MDA5, IFNβ, and other innate immunity genes (phase 2) downstream of LGP2. Simultaneous depletion of PUM1 and LGP2 abolished phase 1 and 2 gene upregulation. PUM2 depletion did not replicate this effect. |
siRNA knockdown of PUM1 and LGP2 (single and double), RT-qPCR, IFNβ functional assay (HSV-1 replication suppression) |
Proceedings of the National Academy of Sciences of the United States of America |
High |
28760986
|
| 2019 |
PUM1 binding to the 3' UTR of HOTAIR lncRNA decreases its half-life and steady-state level, thereby inhibiting trophoblast invasion. RNA-protein pull-down and mRNA stability assays confirmed PUM1 as a direct binding partner of HOTAIR mRNA. PUM1 overexpression impairs trophoblast invasion, while PUM1 knockdown enhances it, through HOTAIR upregulation. |
RIP, RNA pull-down, mRNA stability assay, trophoblast invasion assays, lncRNA transcriptome sequencing, villous explant culture model |
Molecular therapy : the journal of the American Society of Gene Therapy |
High |
31862314
|
| 2020 |
PUM1 promotes degradation of 48 specific target mRNAs. DNA-damaging agents (e.g., cisplatin) reduce PUM1 protein abundance, thereby relieving PUM1-mediated decay of PCNA and UBE2A mRNAs encoding translesion synthesis (TLS) factors, which activates TLS. PUM1 overexpression impairs TLS and increases cisplatin sensitivity. |
Transcriptome-wide mRNA stability analysis combined with PUM1 RIP-seq, PUM1 knockdown/overexpression, RNA-seq, cisplatin treatment |
Cell reports |
High |
32375027
|
| 2022 |
PUM1 directly binds γ-globin (HBG1) mRNA, reducing its stability and translational efficiency, which contributes to the fetal-to-adult hemoglobin switch. PUM1 expression is regulated by erythroid master transcription factor EKLF/KLF1. PUM1 knockdown in human erythroid cells leads to ~22% HbF without affecting β-globin levels. |
RIP, mRNA stability assay, translational efficiency measurement, PUM1 knockdown in human erythroid cells, patient HbF measurement (PUM1 RNA-binding domain mutation) |
Blood advances |
High |
35667093
|
| 2018 |
PUM1 and PUM2 exhibit mechanistically distinct modes of regulation of SIAH1 mRNA: PUM1 (unlike PUM2) exerts PBE-independent repression of SIAH1 3'UTR-dependent expression. The PUF domains of PUM1 and PUM2 show different EMSA complex formation patterns with SIAH1 3'UTRs. NANOS3 (but not NANOS2) directly binds SIAH1 3'UTR independently of PBEs or the PUF domain and cooperates with PUM1/PUM2 in repression. |
Luciferase reporter assays, EMSA, cooperativity assays with NANOS paralogues, NANOS patient mutation constructs |
Cellular and molecular life sciences : CMLS |
Medium |
30269240
|
| 2021 |
PUM1 binds the 3'UTR of LRP6 mRNA (verified by RNA pull-down, RIP, luciferase reporter), reducing LRP6 mRNA and protein levels, and thereby inhibiting trophoblast cell proliferation, migration, and invasion. PUM1 depletion-mediated promotion of trophoblast function was reversed by LRP6 knockdown. |
RNA pull-down, RNA immunoprecipitation, luciferase reporter assay, RT-qPCR, western blot, functional cell assays |
Biochemistry and cell biology = Biochimie et biologie cellulaire |
Medium |
34734756
|
| 2019 |
PUM1 knockdown in pancreatic cancer cells activates the PERK/eIF2/ATF4 signaling pathway (increased p-PERK, p-EIF2A, ATF4), suppressing proliferation, migration, invasion, and EMT. A PERK inhibitor reversed these effects, establishing a negative regulatory relationship between PUM1 and this stress-response pathway. PUM1 levels negatively correlate with p-PERK levels in PDAC tissues. |
cDNA microarrays, siRNA knockdown, western blot, in vitro and in vivo functional assays, PERK inhibitor rescue |
Cell death & disease |
Medium |
31395860
|
| 2022 |
NANOS3 in complex with PUM1 causes 3'UTR-mediated repression of FOXM1 mRNA, a transcription factor critical for G2/M phase transition, thereby controlling G2/M progression in a human primordial germ cell model (TCam-2 cells). FOXM1 potentially acts as a transcriptional activator of NANOS3 and PUM1, suggesting a regulatory feedback loop. |
RNA-sequencing, 3'UTR luciferase reporter assay, NANOS3 and PUM1 overexpression in TCam-2 cells, cell cycle analysis |
International journal of molecular sciences |
Medium |
35743036
|
| 2020 |
PUM1 forms distinct RNP regulatory networks (RNA regulons) compared to PUM2, associating with different sets of protein cofactors involved in RNA processing, despite recognizing the same RNA binding motif. PUM1 and PUM2 regulate partially non-overlapping pools of mRNAs in human male germ cells. |
RIP-Seq, RNA-Seq, global mass spectrometry-based protein interactome profiling (TCam-2 human male germ cell line) |
Cells |
Medium |
32316190
|
| 2021 |
PUM1 represses CDKN1B (p27) protein expression through translational control (not mRNA level) in prostate cancer cells. PUM1 knockdown consistently elevated CDKN1B protein via increased translation but did not affect CDKN1B mRNA levels; PUM1 overexpression reduced CDKN1B protein. |
PUM1 knockdown/overexpression, western blot, polysome/translation assays, subcutaneous tumor xenograft |
Journal of biomedical research |
Medium |
34531333
|
| 2023 |
PUM1 binds directly to the DEPTOR mRNA pumilio response element (PRE), maintaining DEPTOR transcript stability and preventing its degradation. PUM1-mediated DEPTOR upregulation inhibits mTORC1 and relieves inhibitory feedback to PI3K, activating PI3K-Akt signaling and promoting glycolysis in gastric cancer cells. |
RNA-sequencing, bioinformatics, metabolomics, RNA immunoprecipitation, luciferase reporter assay, PUM1 knockdown/overexpression, in vivo xenograft |
Advanced science (Weinheim, Baden-Wurttemberg, Germany) |
Medium |
37469018
|
| 2014 |
PUM1 silencing increased p27 expression and the amount of the p27-CDK2 complex in pancreatic cancer cells, consistent with PUM1-mediated translational repression of p27 (CDKN1B). PUM1 levels correlate inversely with p27 activity. |
PUM1 siRNA knockdown, western blot, immunoprecipitation of p27-CDK2 complex, cell proliferation assays |
Phytomedicine : international journal of phytotherapy and phytopharmacology |
Low |
31128486
|
| 2025 |
PUM1 binds KCNK3 mRNA and destabilizes it in pulmonary artery smooth muscle cells (PASMCs). HIF1α, activated by hypoxia, directly binds the PUM1 promoter to transcriptionally upregulate PUM1 expression, establishing a HIF1α-PUM1-KCNK3 regulatory axis driving pathological PASMC phenotypes. AAV9-mediated PUM1 knockdown attenuated pulmonary hypertension in vivo. |
ChIP (HIF1α binding to PUM1 promoter), RNA immunoprecipitation (PUM1-KCNK3 mRNA), mRNA stability assay, AAV9 knockdown in vivo rat PH models, PASMC functional assays |
Biochimica et biophysica acta. Molecular basis of disease |
Medium |
41135634
|
| 2024 |
PUM1's intrinsically disordered regions (IDRs) interact multivalently with distinct binding sites on the CCR4-NOT deadenylase complex to recruit it to target mRNAs and promote deadenylation. Phosphorylation within these IDRs tunes the deadenylation rate in a continuously graded manner. PUM1-mediated repression requires CCR4-NOT deadenylase activity and PABPC1/PABPC4, which stabilize poly(A) tails and modulate PUM1 repression in a concentration-dependent manner. |
Structural biology, biochemical reconstitution, in vitro deadenylation assays, phosphorylation mutagenesis, IDR binding mapping |
bioRxivpreprint |
Medium |
|
| 2025 |
PUM1-mediated mRNA repression requires CCR4-NOT deadenylase and is dependent on PABPC1 and PABPC4; PUM1 associates with PABPCs, and in their absence, targets escape PUM1 control. PABPC abundance inversely tunes PUM repression in a concentration-dependent manner. |
Co-immunoprecipitation (PUM-PABPC association), mRNA decay assays, genetic depletion of deadenylase components and PABPCs, reporter assays |
bioRxivpreprint |
Medium |
|
| 2025 |
PUM1 negatively regulates innate immunity gene expression both at steady state and during SARS-CoV-2 infection. PUM1 depletion slightly increases intracellular SARS-CoV-2 RNA levels, suggesting mild antiviral or indirect host-factor regulatory activity, but does not affect progeny virion production. |
PUM1 depletion (siRNA/shRNA), intracellular viral RNA quantification, innate immunity gene expression analysis, PRE binding analysis |
The Journal of general virology |
Medium |
40956600
|
| 2021 |
PUM1 interacts with DDX5 mRNA 3' UTR and positively regulates DDX5 mRNA expression in cetuximab-resistant colon cancer cells. PUM1 knockout reduced DDX5 levels and decreased cell proliferation in resistant lines. |
CRISPR-Cas9 PUM1 and DDX5 knockout, qPCR, immunoblot, cell viability assays |
Frontiers in cell and developmental biology |
Low |
34447749
|
| 2023 |
PUM1 binds and stabilizes PAK6 mRNA in lung adenocarcinoma cells, as confirmed by RNA immunoprecipitation and luciferase assays. PUM1 silencing reduced PAK6 levels, promoted ferroptosis (elevated Fe2+ and MDA), and reduced tumor growth in vivo, effects reversed by PAK6 restoration. |
RNA immunoprecipitation, luciferase assay, PUM1 knockdown, ferroptosis markers (Fe2+, MDA), in vivo xenograft |
Pathology, research and practice |
Low |
40694989
|
| 2015 |
A gene trap mutation in the mouse Pum1 gene (Pum1XE002) results in loss of preimplantation embryos; no homozygous blastocysts are recovered, indicating an essential role for PUM1 in very early embryonic development or fertilization. |
Mouse gene trap, embryo genotyping, in vitro fertilization, embryo culture |
Biochemical and biophysical research communications |
Medium |
25896760
|