| 2014 |
Crystal structure of the MTDH-SND1 complex was determined at high resolution, revealing that an 11-residue MTDH peptide motif occupies an extended groove between SND1's SN1 and SN2 domains, with two MTDH tryptophan residues nestled into two well-defined pockets in SND1. Mutagenesis of both tryptophan-binding pockets disrupted MTDH-SND1 interaction and impaired their roles in breast cancer and SND1 stability under stress. |
X-ray crystallography, mutagenesis, functional cancer cell assays |
Cell reports |
High |
25242325
|
| 2014 |
MTDH interacts with and stabilizes SND1; disrupting the MTDH-SND1 interaction (by silencing either protein or disrupting their binding) compromises tumor-initiating cell survival and tumorigenesis in multiple mouse mammary tumor models, establishing that MTDH supports cell survival under oncogenic/stress conditions through SND1 stabilization. |
Co-immunoprecipitation, mouse genetic tumor models, knockdown/disruption studies with in vivo xenograft/tumor assays |
Cancer cell |
High |
24981741
|
| 2011 |
SND1 was identified as an MTDH-interacting protein by mass spectrometry-based screen and confirmed by co-immunoprecipitation. SND1 promotes lung metastasis, resistance to apoptosis, and regulates expression of metastasis- and chemoresistance-associated genes in breast cancer cells. |
Mass spectrometry pulldown, co-immunoprecipitation, loss-of-function (knockdown) with metastasis assays |
The Journal of biological chemistry |
Medium |
21478147
|
| 2019 |
SND1 functions as an m6A RNA reader: it binds m6A-modified hairpin in KSHV ORF50 RNA, stabilizes the ORF50 transcript, and is essential for KSHV lytic replication. RIP-seq and eCLIP characterization confirmed SND1 as a transcriptome-wide m6A reader. |
RIP-seq, eCLIP, RNA immunoprecipitation, m6A-modified RNA binding assays, SND1 depletion with viral replication readout |
eLife |
High |
31647415
|
| 2023 |
SND1 binds the 5' end of SARS-CoV-2 negative-sense viral RNA and is required for viral RNA synthesis. SND1 interacts directly with the viral RNA-binding protein NSP9 and remodels NSP9 occupancy, altering covalent NSP9 linkage to initiating nucleotides at replication-transcription initiation sites. |
Biochemical fractionation of viral RNA-bound proteins, SND1 depletion with viral RNA synthesis and growth kinetics readout, Co-IP with NSP9, covalent RNA-protein linkage mapping |
Cell |
High |
37794589
|
| 2012 |
SND1 promotes tumor angiogenesis in hepatocellular carcinoma through a linear pathway: SND1 activates NF-κB, which induces miR-221, which in turn induces angiogenic factors Angiogenin and CXCL16. Inhibition of any component in this cascade blocked SND1-induced angiogenesis. |
Stable SND1 overexpression/knockdown in HCC cells, CAM assay, HUVEC differentiation assay, reporter and pathway inhibitor experiments |
The Journal of biological chemistry |
Medium |
22396537
|
| 2015 |
SND1 expression is transcriptionally activated by the TGFβ1/Smad2/Smad3 complex binding to Smad-specific recognition motifs (RD motifs) in the SND1 promoter. SND1 in turn promotes Smurf1 expression, leading to RhoA ubiquitination and degradation, disrupting F-actin organization and increasing breast cancer cell migration, invasion, and metastasis. |
Promoter analysis (luciferase, EMSA, ChIP), Smad complex gain/loss-of-function, RhoA ubiquitination assay, cell migration/invasion assays, in vivo metastasis models |
Cancer research |
Medium |
25596283
|
| 2017 |
SND1 directly binds to conserved motifs (motifs 1 and 2) in the promoter regions of Smad2/3/4 genes, recruits the histone acetyltransferase GCN5 through its Tudor domain, increases H3K9 acetylation, and thereby activates Smad2/3/4 transcription to enhance TGFβ1 signaling and breast cancer metastasis. |
EMSA, GST pulldown (Tudor domain requirement), ChIP, loss-of-function assays, phospho-Smad readout |
Oncogene |
Medium |
28263968
|
| 2013 |
SND1 interacts with SAM68 (identified by mass spectrometry) and together they promote inclusion of CD44 variable exons in prostate cancer cells. SND1 recruits SAM68 and spliceosomal components to CD44 pre-mRNA; the effect of SND1 on CD44 splicing required SAM68 and intact SAM68-binding sites in the pre-mRNA. |
Mass spectrometry, co-immunoprecipitation, SAM68 knockdown epistasis, RT-PCR splicing assays, mutation of SAM68-binding sites in pre-mRNA |
Oncogene |
Medium |
23995791
|
| 2016 |
SND1 interacts with monoglyceride lipase (MGLL), identified by modified yeast two-hybrid and confirmed by co-immunoprecipitation; this interaction results in ubiquitination and proteasomal degradation of MGLL, suppressing its tumor-suppressive function in hepatocellular carcinoma. |
Yeast two-hybrid, co-immunoprecipitation, ubiquitination assay, MGLL overexpression rescue, in vivo xenograft |
The Journal of biological chemistry |
Medium |
26997225
|
| 2021 |
The MTDH-SND1 complex suppresses antitumor T cell responses by binding to and destabilizing Tap1/Tap2 mRNAs, reducing antigen presentation machinery components. Pharmacological disruption of the MTDH-SND1 complex with compound C26-A6 enhanced tumor antigen presentation and CD8+ T cell infiltration. |
Genetic and pharmacological disruption of MTDH-SND1 complex, mRNA stability assays for Tap1/Tap2, in vivo immunological readouts (T cell infiltration, antigen presentation) |
Nature cancer |
High |
35121988
|
| 2021 |
Genetic ablation of Mtdh in mice inhibits breast cancer development through disruption of the MTDH-SND1 interaction, establishing that the interaction is required to sustain breast cancer progression. Small-molecule inhibitors C26-A2 and C26-A6 disrupting this protein-protein interaction suppressed tumor growth, metastasis, and enhanced chemotherapy sensitivity. |
Genetically modified mice (Mtdh ablation), small-molecule compound screen against MTDH-SND1 PPI, in vitro and in vivo TNBC preclinical models |
Nature cancer |
High |
35121987
|
| 2020 |
SND1 is an ER membrane-associated protein: its N-terminal peptide associates with SEC61A anchored on the ER membrane. The SN domain of SND1 catches nascent MHC-I heavy chain and guides it to ER-associated degradation (ERAD), thereby impairing normal MHC-I assembly and antigen presentation, enabling immune evasion by tumor cells. |
Subcellular fractionation, co-immunoprecipitation (SND1-SEC61A, SND1-MHC-I heavy chain), ERAD pathway assays, SND1 deletion in syngeneic mouse tumor models with CD8+ T cell readout |
Science advances |
High |
32917674
|
| 2022 |
Mitochondrion-localized SND1 (via N-terminal amino acids 1–63 as a mitochondrial targeting sequence imported via TOM70) interacts with PGAM5 in mitochondria, promoting PGAM5-DRP1 binding and mitophagy, which supports liver cancer cell proliferation and tumor growth. |
Organelle subcellular isolation, immunoprecipitation-mass spectrometry, domain deletion (MTS mutants), Co-IP, in vitro and in vivo tumor models |
Frontiers in oncology |
Medium |
35433434
|
| 2007 |
SND1 functions as a component of RISC and overexpression in colon cancer cells causes downregulation of APC protein without altering APC mRNA levels, and alters E-cadherin distribution from membrane to cytoplasm. Stable Snd1 overexpression in IEC6 cells promotes loss of contact inhibition and cell growth. |
Stable overexpression in intestinal epithelial cells, immunohistochemistry, Western blot (APC protein vs. mRNA), cell proliferation assays |
Cancer research |
Medium |
17909068
|
| 2012 |
SND1-BRAF chromosomal rearrangement (7q32-7q34) produces a constitutively active SND1-BRAF fusion protein that hyperactivates the MAPK pathway (ERK), conferring resistance to c-Met inhibitor in gastric cancer cells. Combination with RAF or MEK inhibitor overcame resistance. |
Chromosomal rearrangement characterization, functional expression of SND1-BRAF fusion, ERK phosphorylation assays, inhibitor combination studies |
PloS one |
Medium |
22745804
|
| 2013 |
SND1 interacts with and regulates processing of miR-17-92a cluster: SND1 binds pre-miR-92a and all mature miR-17-92a members (identified by RNA pulldown and mass spectrometry), and SND1 silencing resolves a hypoxia-induced block in miRNA processing, increasing mature miRNA levels. |
RNA pulldown, mass spectrometry, SND1 knockdown, miRNA processing Northern/qPCR assays under hypoxic conditions |
FEBS letters |
Medium |
23770094
|
| 2010 |
SND1 (SND p102) colocalizes with endoplasmic reticulum and Golgi markers by sucrose gradient fractionation, and under steatogenic conditions translocates to and associates specifically with low-density lipid droplets in hepatocytes, as confirmed by both gradient fractionation and confocal microscopy. |
Sucrose gradient fractionation, confocal microscopy, oleate treatment of HepG2 cells |
Journal of physiology and biochemistry |
Medium |
20414760
|
| 2015 |
SND1 increases AT1R mRNA stability, resulting in elevated AT1R protein levels, which activates ERK and Smad2 and consequently the TGFβ signaling pathway, promoting EMT, migration, and invasion in hepatocellular carcinoma cells. |
mRNA stability assays, Western blot for ERK/Smad2 phosphorylation, SND1 overexpression/knockdown, migration/invasion assays |
FEBS open bio |
Medium |
24918049
|
| 2019 |
SND1 acts upstream of SLUG to promote EMT: SND1 recruits acetyltransferases GCN5 and CBP/p300 to the SLUG promoter, increasing chromatin accessibility and activating SLUG transcription; SLUG then regulates N-CAD, VIM, E-CAD, and CLDN1 expression to promote EMT in ovarian cancer cells. |
ChIP, gene expression profiling, SND1 loss-of-function, co-activator recruitment assays, invasion/migration assays |
FASEB journal |
Medium |
30509125
|
| 2012 |
The SND1 gene promoter is regulated by NF-κB, Sp1, and NF-Y transcription factors. EMSA and ChIP confirmed direct binding of these factors to specific sites in the SND1 proximal promoter; mutation of CCAAT/GC boxes and NF-κB elements substantially reduced SND1 promoter activity. TNF-α-induced upregulation of SND1 is mediated at least in part via NF-κB. |
EMSA, ChIP, luciferase reporter assays with deletion analysis and site-directed mutagenesis |
Biochimie |
Medium |
23160072
|
| 2015 |
SND1 occupies 645 gene promoters in HepG2 cells under basal conditions and 281 additional promoters upon TNFα treatment, as determined by ChIP-chip. SND1 deficiency compromises glycerolipid gene reprogramming and lipid phenotypic responses to TNFα. |
ChIP-chip, transcription factor binding site analysis, SND1 knockdown with lipid metabolism readout |
Nucleic acids research |
Medium |
26323317
|
| 2017 |
SREBP-2 directly binds to SRE and E-box motifs in the SND1 proximal promoter to activate SND1 transcription, as shown by ChIP and site-directed mutagenesis. SREBP-1c/1a binds the SRE element and represses SND1 transcription. SREBP-2 activating conditions (simvastatin, lipoprotein-deficient medium) increase SND1 mRNA and promoter activity. |
ChIP, luciferase reporter assays, site-directed mutagenesis, SREBP overexpression and siRNA knockdown |
Oncotarget |
Medium |
29296233
|
| 2017 |
SND1 localizes to stress granules under heat shock, and this recruitment requires intact microtubule cytoskeleton tracks; nocodazole-mediated microtubule depolymerization significantly impairs SND1 granule assembly during heat shock. SND1 granules co-localize with α-tubulin microtubules. |
Immunofluorescence live-cell imaging, nocodazole treatment, heat shock assay, co-localization analysis |
Anatomical record |
Medium |
28758359
|
| 2019 |
PIM1 kinase directly binds and phosphorylates SND1; decreased SND1 expression leads to upregulation of senescence-associated secretory phenotype (SASP), and SND1 is involved in PIM1-mediated cellular senescence. |
Silver staining/LC-MS/MS identification of PIM1-interacting proteins, Co-IP, immunofluorescence, Western blot, cell proliferation assays |
Medical science monitor |
Low |
31860636
|
| 2021 |
SND1 Tudor domain interacts with ERG (an ETS-domain transcription factor overexpressed in prostate cancer); ERG promotes nuclear localization of the SND1/MTDH complex; forced nuclear localization of SND1 prominently increases its growth-promoting function; prostate-specific Snd1 deletion reduces cancer growth in PB-Cre/Ptenflox/flox/ERG mice. |
Co-immunoprecipitation (Tudor domain), domain-specific interaction mapping, nuclear localization forced-expression experiments, Snd1 conditional knockout mouse prostate cancer model |
Nature communications |
High |
37973913
|
| 2022 |
SND1 binds to the 3' UTR of GPX4 mRNA and stabilizes it; knockdown of SND1 in bladder cancer cells promotes ferroptosis by destabilizing GPX4 mRNA, overcoming cisplatin resistance. |
ChIP and dual-luciferase assay for SND1-GPX4 mRNA 3'UTR binding, RNA interference, ferroptosis assays (ROS, iron, GSH, MDA), GPX4 overexpression rescue |
Oncology reports |
Medium |
36453257
|
| 2022 |
SND1 destabilizes HSPA5 mRNA by binding to its 3'UTR, leading to reduced HSPA5 protein, which in turn reduces GPX4 expression (since HSPA5 protein directly stabilizes GPX4), ultimately promoting ferroptosis in osteoarthritis chondrocytes. |
RNA binding (3'UTR binding assay), mRNA stability assay, Co-IP for HSPA5-GPX4 interaction, SND1 knockdown in vivo (rat OA model), IL-1β-stimulated chondrocyte model |
Inflammation research |
Medium |
35320827
|
| 2024 |
KDM6A interacts with SND1 (interaction enhanced by KDM6A SUMOylation at K90); the KDM6A-SND1 complex protects nascent DNA by recruiting RPA and Ku70, preventing replication fork collapse. Loss of KDM6A or SND1 increases H3K9ac and H4K8ac but attenuates Ku70 and H3K4me3 at nascent DNA, enhancing genotoxin sensitivity. |
Co-IP, nascent DNA chromatin analysis (Ku70/RPA enrichment), histone modification ChIP, KDM6A mutation analysis, genotoxin sensitivity assays |
Nucleic acids research |
Medium |
38850159
|
| 2024 |
In vascular smooth muscle cells, ELK1 transcription factor binds the Snd1 promoter to activate its transcription upon PDGF stimulation. Upregulated SND1 then competes with myocardin for SRF binding and recruits KAT2B (histone acetyltransferase) to SRF target gene promoters, increasing histone acetylation and promoting SRF-driven transcription of proliferation- and migration-related genes, thereby inducing neointimal hyperplasia. SMC-specific Snd1 knockout mice showed reduced neointimal hyperplasia. |
ChIP, Co-IP (SND1-SRF interaction), chromatin accessibility/histone acetylation assays, SMC-specific conditional Snd1 knockout mice, wire-injury vascular model |
Cellular and molecular life sciences |
High |
38279051
|
| 2025 |
SND1 translational repression is mediated by the mTORC1/4E-BP1 pathway under sunitinib stress in endothelial cells. SND1 transcriptionally regulates UBE2N, an E2-conjugating enzyme mediating K63-linked ubiquitination; UBE2N, together with E3 ligases RNF8 and RNF168, mediates the DNA damage repair response that protects endothelial cells from sunitinib-induced dysfunction. |
Ribosome profiling (translational control mapping), mTORC1/4E-BP1 pathway modulation, SND1 OE/knockdown, UBE2N downstream identification, DNA damage repair assays, in vitro and in vivo vascular dysfunction models |
The Journal of clinical investigation |
Medium |
39895626
|
| 2023 |
SND1 binds to and stabilizes lncTCF7, and together SND1 and lncTCF7 are required for recruitment of the SWI/SNF chromatin remodeling complex to the TCF7 promoter to activate TCF7 transcription. The SND1-binding region maps to the 3'-end of lncTCF7. |
RNA pulldown, quantitative mass spectrometry, knockdown epistasis, ChIP (SND1, SWI/SNF recruitment), structural probing of lncTCF7 subdomains |
Scientific reports |
Medium |
39169000
|
| 2025 |
USP37 is the deubiquitinase of SND1, stabilizing SND1 protein. CDK1 phosphorylates USP37 at threonine 631 (not serine 628), enhancing USP37 deubiquitinase activity and thereby stabilizing SND1 to drive colorectal cancer progression. Dacarbazine was identified as a pharmacological inhibitor of USP37 that disrupts SND1 stability. |
Proteomics, ubiquitinomics, interactomics (MS-based), CDK1 phosphorylation site mapping (T631 vs S628 mutagenesis), USP37 deubiquitinase activity assay, in vivo CRC models |
Acta pharmaceutica sinica. B |
Medium |
40486858
|
| 2021 |
SPT6 interacts with SND1 to co-activate hTERT expression and promote colon cancer cell proliferation, stemness, and growth in vitro and in vivo. SPT6 was identified by pull-down/mass spectrometry as a protein binding the hTERT promoter. |
Pulldown/mass spectrometry, SPT6-SND1 interaction confirmed, hTERT promoter reporter assays, in vitro and xenograft in vivo models |
Molecular oncology |
Low |
33305480
|
| 2023 |
SNAI3-AS1 competitively binds SND1 and perturbs m6A-dependent recognition of Nrf2 mRNA 3'UTR by SND1, reducing Nrf2 mRNA stability and sensitizing glioma cells to ferroptosis. |
RNA pulldown, RIP, MeRIP, dual-luciferase reporter assay, gain/loss-of-function rescue experiments |
Journal of experimental & clinical cancer research |
Medium |
37202791
|
| 2023 |
SND1 co-activates HIF1α as a transcriptional co-activator, regulating downstream EZH2 transcription, and thereby promotes PyMT-induced breast tumor initiation and expansion of tumor-initiating cells. |
SND1 knockout in PyMT mouse model, histological and cytometric analysis, mechanistic co-activator assays (SND1-HIF1α interaction and EZH2 transcription readout) |
The FEBS journal |
Medium |
37622244
|
| 2022 |
N-glycosylation of SND1 at Asn50 is required for its folding and stability; mutation of Asn50 destabilizes SND1 and leads to its ER-associated degradation, inhibiting glioma cell proliferation and metastasis. |
Site-directed mutagenesis of four N-glycosylation sites (N50, N168, N283, N416), Western blot, ERAD pathway assays, cell proliferation and invasion assays |
Journal of immunology research |
Medium |
36213325
|
| 2024 |
PIM1-catalyzed phosphorylation of SND1 at serine 426 strengthens SND1-SMARCA5 interaction; this interaction mediates SND1's regulation of chromatin dynamics and transcriptional activation of CUX1 oncogene, promoting ESCC progression. Disruption of S426 phosphorylation impaired SND1-SMARCA5 interaction and inhibited ESCC tumor growth in vivo. |
PIM1 phosphorylation assay (S426 site-directed mutagenesis), Co-IP (SND1-SMARCA5), ChIP (histone modification, RNA polymerase II), in vivo tumor models |
International journal of biological macromolecules |
Medium |
39725102
|
| 2025 |
SREBF1 binds the SND1 gene promoter and activates its transcription; SND1 then forms a complex with MTDH that directly binds and degrades SESN2 mRNA, activating mTOR signaling and promoting prostate cancer progression. Disruption of the MTDH-SND1 interaction with C26-A6 inhibited SESN2 mRNA degradation. |
ChIP, dual-luciferase reporter assay, DNA pulldown, RIP-seq and RNA pulldown (SESN2 mRNA binding), pharmacological disruption (C26-A6), in vitro and xenograft models |
Journal of translational medicine |
Medium |
40775338
|
| 2021 |
In SND1 knockout mice, dendritic cells show lower costimulatory molecule expression and IL-12 production and higher IL-10 production; adoptive transfer of SND1-KO DCs failed to protect against chlamydial challenge infection and showed reduced ability to promote Th1 responses. This establishes SND1 as required for normal DC function in promoting Th1/17 immunity. |
SND1 knockout mouse model, DC isolation and functional assays, DC-T cell co-culture, adoptive DC transfer, in vivo chlamydial lung infection model |
PLoS pathogens |
Medium |
33635920
|
| 2023 |
The SN domain of SND1 interacts with MHC-I heavy chain at K490-containing sites (as determined by structure-based virtual screening and docking analysis); EGC (-)-Epigallocatechin prevents SND1-MHC-I binding by altering the spatial conformation of SND1 at this site, restoring MHC-I surface presentation and CD8+ T cell responses. |
Structure-based virtual screening, molecular docking, EGC treatment with MHC-I surface expression readout, in vivo melanoma mouse model, CD8+ T cell functional assays |
Cancer letters |
Low |
38710299
|