| 2009 |
TRIM44 interacts with and stabilizes TRIM17 (terf), a TRIM E3 ubiquitin ligase. TRIM44 inhibits ubiquitination of terf (which otherwise undergoes K48-linked polyubiquitination via UbcH6 E2 enzyme) and thereby prevents its proteasomal degradation. The N-terminal ZF UBP (zinc-finger ubiquitin hydrolase) domain of TRIM44 was proposed as the mechanistic basis, leading to classification of TRIM44 as a 'USP-like-TRIM'. |
Co-immunoprecipitation, in vitro ubiquitination assay with UbcH6, proteasome inhibitor treatment in mammalian cells |
Biochemical and biophysical research communications |
High |
19358823
|
| 2018 |
TRIM44 functions as a deubiquitinase for HIF-1α, stabilizing HIF-1α protein levels during both hypoxia and normoxia in multiple myeloma cells. Stabilized HIF-1α promotes MM cell survival and quiescence in the osteoblastic bone marrow niche. |
Co-immunoprecipitation, gain- and loss-of-function experiments, xenograft mouse models, fluorescent tracer assays for niche occupancy |
Leukemia |
Medium |
30089913
|
| 2019 |
TRIM44 directly binds and stabilizes TLR4 (Toll-like receptor 4) via Co-IP and mass spectrometry, and this stabilization activates the AKT/mTOR signaling pathway to drive melanoma EMT and progression. Interference with TLR4 impeded TRIM44-induced tumor progression. |
Co-immunoprecipitation, mass spectrometric analysis, gain- and loss-of-function experiments in cell lines and xenograft mouse models, AKT inhibitor treatment |
Journal of experimental & clinical cancer research |
Medium |
30922374
|
| 2021 |
TRIM44 links the ubiquitin-proteasome system (UPS) to autophagy by binding K48-linked ubiquitin chains on aggregated proteins and promoting SQSTM1/p62 oligomerization, which accelerates aggregate protein clearance via autophagy. Suppression of UPS leads to TRIM44 upregulation, which then activates autophagy. |
Loss- and gain-of-function experiments, autophagy flux assays (LC3, 3-MA, chloroquine), co-immunoprecipitation, fluorescence imaging of p62 oligomerization, DSP crosslinking |
Autophagy |
High |
34382902
|
| 2021 |
TRIM44 deubiquitinates p62 (SQSTM1), promoting its oligomerization and cytoplasmic retention. This prevents nuclear translocation of p62 upon irradiation, thereby preserving cytoplasmic FLNA and 53BP1 from degradation, which enhances DNA damage repair. |
Co-immunoprecipitation, ubiquitination assays, subcellular fractionation, irradiation experiments, Western blotting, immunofluorescence |
Oncogene |
High |
34211088
|
| 2022 |
TRIM44 interacts with FLNA (Filamin A) and promotes BRCA1-dependent homologous recombination repair, conferring cisplatin resistance in lung adenocarcinoma. TRIM44 stabilizes and deubiquitinates FLNA, and FLNA is required for TRIM44's function in drug resistance. |
Co-immunoprecipitation, microarray analysis, immunofluorescence, qRT-PCR, Western blotting, BRCA1 depletion rescue experiments, xenograft models |
International journal of biological sciences |
Medium |
35541909
|
| 2024 |
TRIM44 binds PARP1 and regulates the ubiquitination-PARylation balance of PARP1, facilitating timely recruitment of the MRN complex to double-strand breaks for repair. Upon PARP inhibitor treatment, TRIM44 shifts its binding from PARP1 to the MRN complex via its ZnF UBP domain. TRIM44 knockdown enhances sensitivity to olaparib and overcomes resistance caused by 53BP1 deficiency. |
Screen of 211 ubiquitin-related proteins, Co-immunoprecipitation, domain-mapping (ZnF UBP), siRNA knockdown, cell survival assays with olaparib |
Nucleic acids research |
High |
39217466
|
| 2024 |
TRIM44 promotes SQSTM1/p62 oligomerization in both PB1 domain-dependent and oxidation-dependent manners under oxidative stress. TRIM44 amplifies the interaction between protein kinase A and oligomerized SQSTM1, leading to enhanced phosphorylation of SQSTM1 at S349, which activates NFE2L2 (NRF2), a transcription factor in the oxidative stress response. |
Gain- and loss-of-function experiments, Co-immunoprecipitation, phosphorylation assays, fluorescence imaging, domain-specific constructs (PB1) |
Scientific reports |
Medium |
39152142
|
| 2014 |
TRIM44 promotes NSCLC cell migration and invasion through activation of NF-κB signaling, leading to upregulation of CXCR6 and MMP9. Blocking NF-κB with inhibitor PDTC reversed TRIM44-induced migration/invasion and CXCR6/MMP9 upregulation. |
Overexpression and siRNA knockdown in cell lines, migration/invasion assays, qPCR, NF-κB inhibitor (PDTC) treatment |
International journal of clinical oncology |
Medium |
25345539
|
| 2015 |
Missense mutations in TRIM44 (p.S64Y and p.G155R) cause aniridia by reducing PAX6 expression. Overexpression of wild-type TRIM44 significantly reduced PAX6 expression in human lens epithelial cells, and the p.G155R mutant had a stronger suppressive effect than wild-type. |
Luciferase reporter assay, Western blotting, overexpression in human lens epithelial cells, clinical mutation identification |
Human mutation |
Medium |
26394807
|
| 2016 |
TRIM44 promotes NSCLC cell proliferation by accelerating G1/S transition via upregulation of cyclins and CDKs, and induces EMT. TRIM44-induced effects on proliferation, EMT, and mTOR signaling were reversed by mTOR inhibitor treatment, placing TRIM44 upstream of mTOR. |
siRNA knockdown and overexpression, cell cycle analysis, invasion/migration assays, mTOR inhibitor treatment, in vivo xenograft |
Oncotarget |
Medium |
27058415
|
| 2017 |
Knockdown of TRIM44 in papillary thyroid cancer cells downregulates β-catenin, cyclin-D1, and c-Myc, and activator of Wnt/β-catenin pathway (LiCl) rescued the anticancer effects of TRIM44 silencing, placing TRIM44 upstream of the Wnt/β-catenin pathway. |
siRNA knockdown, Western blotting, LiCl rescue experiments, proliferation/invasion assays |
Biomedicine & pharmacotherapy |
Low |
28965013
|
| 2018 |
Elevated TRIM44 activates MAPK signaling in intrahepatic cholangiocarcinoma to induce EMT and apoptosis resistance. MEK inhibitor AZD6244 reversed TRIM44-induced EMT and apoptosis resistance. |
siRNA knockdown, cDNA overexpression, invasion/migration/apoptosis assays, MEK inhibitor rescue |
Cancer medicine |
Low |
29446253
|
| 2020 |
TRIM44 promotes renal cell carcinoma (RCC) cell proliferation and migration by inhibiting FRK (Fyn-related kinase), a tumor suppressor. Cell proliferation inhibited by TRIM44 knockdown was recovered by siFRK co-treatment, demonstrating epistatic relationship. |
Gain- and loss-of-function by transfection, microarray analysis, Oncomine database integration, siRNA epistasis rescue, cell proliferation assays |
Cancer science |
Medium |
31883420
|
| 2022 |
TRIM44 directly binds LOXL2 (lysyl oxidase-like 2) as demonstrated by co-immunoprecipitation and immunofluorescence, and mediates LOXL2 protein stability via ubiquitination, thereby regulating extracellular matrix remodeling and T-cell-mediated antitumor immunity in gastric cancer. |
Co-immunoprecipitation, immunofluorescence staining, ubiquitination assays, in vivo tumor immunity experiments |
Cellular oncology |
Medium |
36512309
|
| 2023 |
TRIM44 maintains TAK1 stability by inhibiting K48-linked polyubiquitination-mediated degradation of TAK1, thereby increasing phospho-TAK1 levels, activating MAPK signaling, and promoting cardiac fibrosis. Pharmacological inhibition of TAK1 phosphorylation reversed the pro-fibrotic effects of TRIM44. |
TRIM44 knockdown and overexpression in cardiac fibroblasts, mouse MI model, ubiquitination assays (K48-specific), TAK1 inhibitor rescue, Western blotting |
Cellular signalling |
Medium |
37271349
|
| 2022 |
Cardiac-specific TRIM44 knockout in rats attenuates isoproterenol-induced pathological cardiac remodeling by blocking the AKT/mTOR/GSK3β/P70S6K signaling pathway. |
CRISPR-Cas9-generated cardiac-specific Trim44 knockout rats, isoproterenol treatment, cardiac morphological and functional analysis, molecular signaling pathway analysis by Western blotting |
Disease models & mechanisms |
Medium |
35855640
|
| 2025 |
TRIM44 promotes K48-linked polyubiquitination of vimentin through its B-box domain, targeting vimentin for proteasomal degradation. Loss of TRIM44 in clear cell renal cell carcinoma leads to vimentin accumulation and promotes migration, invasion, and proliferation. |
Co-immunoprecipitation, K48-specific ubiquitination assays, B-box domain mutants, gain- and loss-of-function in vitro and in vivo, proteasome inhibitor treatment |
The Journal of biological chemistry |
High |
40967439
|
| 2025 |
TRIM44 facilitates aggressive behaviors in multiple myeloma by deubiquitinating ZEB1, thereby stabilizing ZEB1 protein and promoting MM cell viability, migration, and invasion. |
Co-immunoprecipitation followed by Western blotting, siRNA knockdown and overexpression, ubiquitination assays, xenograft models |
Discover oncology |
Medium |
40014271
|
| 2022 |
TRIM44 interacts with FRS2 (Fibroblast Growth Factor Receptor Substrate 2) and negatively regulates BMP4, β-catenin, and TGF-βR1 expression. FRS2 knockdown reversed the effects of TRIM44 overexpression on endometrial carcinoma cell proliferation, invasion, and apoptosis. NOTE: The original paper [PMID:36387361] was subsequently retracted [PMID:37501839]; mechanistic claims should be treated with low confidence. |
Co-immunoprecipitation, Western blotting, loss-of-function rescue experiments, xenograft models |
Evidence-based complementary and alternative medicine |
Low |
36387361 37501839
|
| 2025 |
TRIM44 promotes DLBCL progression and doxorubicin chemoresistance by activating autophagy, as evidenced by increased LC3II/LC3-I ratio, Beclin1 upregulation, and increased autophagosome formation. TRIM44 is a direct target of miR-665 (validated by miRNA pull-down and luciferase reporter assay). |
Gain- and loss-of-function experiments, autophagy flux assays, miRNA pull-down, luciferase reporter assay, xenograft models |
Hematological oncology |
Medium |
40677140
|
| 2024 |
TRIM44 promotes rabies virus (RABV) replication via an autophagy-dependent mechanism. TRIM44 overexpression activated autophagy and promoted RABV replication, while autophagy inhibition with 3-MA attenuated TRIM44-induced RABV replication. Rapamycin rescued TRIM44-knockdown-induced decreases in LC3B and autophagosome formation and RABV replication. |
RNA-seq identification of upregulated TRIM44 post-infection, overexpression and knockdown experiments, autophagy inhibition (3-MA, rapamycin), LC3B/autophagosome quantification |
International journal of molecular sciences |
Medium |
38731834
|
| 2021 |
TRIM44 knockdown in ovarian cancer cells downregulates FOXM1, EZH2, CCNE2, CCND3, and BIRC5, at least in part through inactivation of the FOXM1-EZH2 signaling pathway, as revealed by gene chip and IPA analysis. |
shRNA knockdown, gene chip analysis, ingenuity pathway analysis (IPA), Western blotting, in vitro proliferation/invasion assays, xenograft |
Translational cancer research |
Low |
35281418
|
| 2022 |
TRIM44 regulates TRIM44 mRNA stability in an ac4C (N4-acetylcytidine) modification-dependent manner via NAT10 in NSCLC; NAT10 maintains TRIM44 mRNA stability, and NAT10 knockdown reduces TRIM44 levels, inactivating the PI3K/AKT pathway. |
RNA immunoprecipitation assay (confirming NAT10-TRIM44 mRNA interaction), Western blotting, qRT-PCR, PI3K/AKT inhibitor (LY294002) rescue, xenograft models |
Thoracic cancer |
Low |
40324967
|
| 2019 |
TRIM44 promotes glioma cell proliferation and cell cycle progression through the AKT/p21/p27 pathway; TRIM44 deficiency upregulates cell cycle inhibitors p21/p27 and inactivates AKT in glioma cells. |
shRNA knockdown, BrdU incorporation, colony formation, FACS analysis, xenograft, Western blotting of AKT/p21/p27 |
Journal of neuro-oncology |
Low |
31605296
|