| 2001 |
SNX3 associates with early endosomes through its PX domain by directly binding phosphatidylinositol-3-phosphate (PtdIns(3)P). Overexpression of SNX3 alters endosomal morphology and delays transport to the lysosome; microinjection of SNX3 antibodies impairs transport from early to recycling endosomes. |
PX domain-PtdIns(3)P binding assay, overexpression morphology analysis, antibody microinjection with transport assay |
Nature cell biology |
High |
11433298
|
| 2007 |
Yeast Grd19/Snx3p functions as a cargo-specific adaptor for the retromer complex. A recycling signal in the iron transporter subunit Ftr1p binds directly to Grd19/Snx3p, and Grd19/Snx3p physically associates with retromer on tubular endosomes to sort Fet3p-Ftr1p into an endocytic recycling pathway that returns the transporter to the plasma membrane via the Golgi (Ypt6p Rab GTPase module). |
Direct binding assay (recycling signal in Ftr1p to Grd19/Snx3p), co-localization on tubular endosomes, genetic epistasis with retromer and Ypt6p module, yeast deletion mutants with cargo trafficking readout |
The Journal of cell biology |
High |
17420293
|
| 2008 |
Snx3/Grd19p-retromer recycling pathway and the ESCRT-dependent MVB sorting pathway act in opposition at a common endosome (marked by Vps27, Snx3, and retromer). Iron-induced ubiquitylation of Fet3-Ftr1 by Rsp5 at this endosome diverts cargo from the Snx3-retromer recycling route to the MVB/degradative route; loss of ESCRT components or ubiquitin-acceptor lysines constitutively shunts Fet3-Ftr1 into the Snx3-retromer recycling pathway. |
Yeast genetics (ESCRT deletion, ubiquitylation site mutants, rsp5 mutants), co-localization of Vps27/Snx3/retromer on endosomes, cargo trafficking assays |
Molecular biology of the cell |
High |
18768754
|
| 2008 |
SNX3 is required for multivesicular body (MVB) formation but is dispensable for EGF receptor degradation. PtdIns(3)P controls complementary functions: Hrs mediates lysosomal targeting while SNX3 mediates MVB biogenesis. |
siRNA knockdown of SNX3 with morphological analysis of MVB formation and EGF receptor degradation assay |
PLoS biology |
Medium |
18767904
|
| 2011 |
SNX3 mediates retrograde endosome-to-Golgi recycling of the Wnt sorting receptor Wntless (Wls) through a retromer pathway that is independent of SNX1/SNX2 and SNX5/SNX6. SNX3 interacts directly with the cargo-selective VPS26/VPS29/VPS35 subcomplex of retromer to sort Wls into a morphologically distinct retrieval pathway required for efficient Wnt secretion. |
C. elegans and mammalian cell genetics (RNAi/knockdown), direct interaction assay of SNX3 with retromer cargo-selective subcomplex, epistasis showing SNX1/2/5/6 independence, Wls recycling and Wnt secretion assays |
Nature cell biology |
High |
21725319
|
| 2011 |
Drosophila SNX3 (DSNX3) is required for retromer-mediated Wls recycling and Wingless secretion. DSNX3 interacts with retromer component Vps35 and co-localizes with Vps35 on early endosomes. SNX1 and SNX6 cannot substitute for SNX3 in Wls recycling, establishing SNX3 specificity in this pathway. |
Drosophila genetic mutants (all 8 snx members), S2 cell RNAi, Wg secretion assay (medium levels), Wls overexpression rescue, co-immunoprecipitation with Vps35, co-localization imaging |
Cell research |
High |
22041890
|
| 2013 |
SNX3 and retromer component VPS35 interact with the transferrin receptor (Tfrc) to sort it to recycling endosomes. Loss of Snx3 impairs Tfrc recycling, causing iron to accumulate in early endosomes, leading to impaired transferrin-mediated iron uptake and anemia in vertebrates. |
Zebrafish/vertebrate morpholino knockdown with hematological phenotype, co-immunoprecipitation of SNX3, VPS35, and Tfrc, endosomal accumulation assay, rescue with non-Tf iron chelates |
Cell metabolism |
High |
23416069
|
| 2013 |
SNX3 recruits to nascent phagosomes via its PI3P-binding PX domain and negatively regulates phagocytic uptake of bacteria in dendritic cells. SNX3 competes with EEA1 for PI3P-binding at phagosomal membranes, suggesting it modulates recruitment of essential PI3P effectors during phagocytosis. |
Live cell imaging of SNX3 recruitment to phagosomes, siRNA knockdown with phagocytosis assay (bacterial uptake), competition assay with EEA1 for membrane recruitment |
Immunology |
Medium |
23237080
|
| 2018 |
SNX3-retromer assembly is essential for Wntless transport and requires an evolutionarily conserved endosome-associated membrane-remodelling complex composed of MON2, DOPEY2, and the putative aminophospholipid translocase ATP9A. In vivo suppression of MON2, DOPEY2, or ATP9A orthologues phenocopies SNX3-retromer loss and leads to enhanced lysosomal degradation of Wntless. Phospholipid flippase activity of ATP9A is implicated in this process. |
Co-immunoprecipitation of SNX3 with MON2/DOPEY2/ATP9A complex, C. elegans in vivo RNAi epistasis, ATPase-inhibited mutant overexpression, Wntless trafficking assay |
Nature communications |
High |
30213940
|
| 2018 |
Alpha-synuclein inhibits Snx3-retromer-mediated recycling of the iron transporter Fet3/Ftr1 in S. cerevisiae by blocking the association of Snx3 with endocytic vesicles, possibly by interfering with Snx3 binding to phosphatidylinositol-3-monophosphate. This shunts Fet3/Ftr1 into the MVB pathway for vacuolar degradation. |
Yeast fluorescence microscopy tracking Snx3-mCherry on endosomes with/without α-syn expression, cargo trafficking assays under low-iron conditions, C. elegans genetic epistasis |
Human molecular genetics |
Medium |
29452354
|
| 2018 |
Overexpression of SNX3 in HEK293T cells reduces internalization of amyloid precursor protein (APP), resulting in increased cell-surface APP, decreased association of APP with BACE1 (assessed by bimolecular fluorescence complementation), and reduced secretion of Aβ peptides and sAPPβ. |
SNX3 overexpression, immunoassay for Aβ, BiFC for APP-BACE1 interaction, α-bungarotoxin-binding internalization assay, flow cytometry for surface APP |
Neuro-degenerative diseases |
Medium |
29414832
|
| 2019 |
SNX3 is transported to Borrelia phagosomes via Rab5a-positive vesicles; its PX domain enables vesicle-phagosome contact by binding PI(3)P in the phagosomal coat. The C-terminal region of SNX3 recruits galectin-9, forming a hub that coordinates two distinct vesicle populations to promote phagosomal compaction and phagolysosome maturation. |
Live-cell imaging of SNX3 on Rab5a vesicles, PI(3)P binding assay, domain-function analysis (C-terminal region for galectin-9 recruitment), phagosome compaction assay |
The Journal of cell biology |
Medium |
31337623
|
| 2020 |
Snx3 knockout mouse embryos display a fully-penetrant cranial neural tube defect caused by defective WLS recycling (mis-trafficking to lysosomes for degradation) and decreased canonical WNT target gene expression. A human NTD-associated point mutation in SNX3 produces functionally impaired SNX3 that fails to co-localize with WLS and leads to WLS degradation. Rescue with a WNT agonist restores neural tube closure in Snx3 mutant embryos. |
Snx3 knockout mouse model, live-cell imaging of WLS recycling, WNT target gene expression (in vivo), WNT agonist rescue, human SNX3 point mutant functional analysis |
Development (Cambridge, England) |
High |
33214242
|
| 2021 |
In C. elegans, SNX-3 organizes tubular endosomes for recycling of clathrin-independent endocytic (CIE) cargoes (hTAC) back to the plasma membrane in a retromer trimer (VPS-26/-29/-35)-independent manner. Loss of SNX-3 abolishes recycling tubules, causes hTAC to be captured by ESCRT and degraded in lysosomes, and leads to increased recruitment of EEA-1 to early endosomes. In HeLa cells, SNX3 and EEA1 compete for binding to PI(3)P on early endosomes. |
C. elegans snx-3 mutants with tubule morphology imaging, cargo surface/total level quantification, ESCRT pathway epistasis, EEA-1 localization assay, PI(3)P competition assay in HeLa cells |
PLoS genetics |
High |
34081703
|
| 2021 |
EGF stimulation upregulates SNX3 abundance (initially at the protein level, then transcriptionally) and increases interaction between SNX3 and EGFR. Long-term SNX3 silencing forces EGFR mRNA/protein overexpression, while SNX3 is required to maintain EGFR protein levels. SNX3 co-localizes with early endosomes and endocytosed EGF. |
Proximity labeling (BioID) for SNX3-EGFR interaction upon EGF, siRNA knockdown (transient and long-term), EGFR protein/mRNA quantification, co-localization imaging, syngeneic in vivo tumor model |
Oncogene |
Medium |
34718348
|
| 2022 |
Alpha-synuclein disrupts Snx3-retromer-mediated retrograde trafficking of the conserved proprotein convertase Kex2 and dipeptidyl aminopeptidase Ste13 from late endosomes to the TGN, diverting them to vacuolar degradation. The membrane-binding ability of α-syn (absent in A30P mutant) is required for this inhibition of Snx3-retromer function. |
Fluorescence microscopy of Kex2-GFP/GFP-Ste13 trafficking in yeast, western blotting, yeast mating assay (α-factor secretion readout), α-syn variant analysis (A53T, A30P, ΔC) |
Human molecular genetics |
Medium |
34570221
|
| 2025 |
SNX3-retromer directly interacts with HMGB1 and mediates its efflux from the nucleus to the cytoplasm (nuclear-cytoplasmic translocation). HMGB1 functions as a direct cargo protein of the SNX3-retromer complex in cardiomyocytes, and this interaction promotes pathological cardiac hypertrophy and heart failure. SNX3 cardiac-specific knockout rescues detrimental heart function in pressure-overload (TAC) mice. |
Immunoprecipitation-based mass spectrometry, localized surface plasmon resonance (direct SNX3-HMGB1 binding), cardiac-specific SNX3 KO mouse (TAC model), adenoviral SNX3 overexpression, HMGB1 overexpression/knockdown epistasis in NRCMs |
Acta pharmacologica Sinica |
Medium |
39753981
|
| 2026 |
SNX-3 is required for basal autophagy under nutrient-adequate conditions in C. elegans and mammalian cells by conferring lysosomal fusion competence. Loss of SNX-3 causes accumulation of autophagosomes and amphisomes and impairs autophagic cargo clearance. Mechanistically, SNX-3 loss reroutes the Q-SNARE components SYX-17 and SNAP-29 to autophagosomes (promoting amphisome formation via VAMP-7/8) while impairing lysosomal delivery of VAMP-8 and RAB-7, generating fusion-incompetent lysosomes. Starvation restores lysosomal fusion capability lost upon snx-3 depletion. |
C. elegans snx-3 mutants, mammalian cell knockdown, autophagosome/amphisome accumulation imaging, SQST-1/p62 cargo clearance assay, SNARE component localization analysis, lysosomal VAMP-8/RAB-7 delivery assay |
Cellular and molecular life sciences : CMLS |
Medium |
41537964
|
| 2025 |
SNX3-retromer forms hybrid endosomal coats with SNX-BAR proteins (Vps5-Vps17). Although simultaneous binding of Snx3 and SNX-BARs to retromer is sterically prohibited in a simple complex, hybrid coats incorporate both SNX classes—likely linked by retromer oligomerisation—at variable subunit ratios and diameters. Hybrid coats show greater membrane scaffolding activity than homogeneous coats. In vivo, Snx3 and SNX-BARs co-localise and mutually impact sorting of their respective cargos. |
In vitro reconstitution with purified proteins, electron microscopy of coat assemblies, in vivo co-localization and cargo sorting assays |
bioRxivpreprint |
Medium |
bio_10.1101_2025.07.29.667382
|
| 2025 |
The AAV receptor AAVR functions as a retromer cargo that engages the SNX3-retromer complex through its cytosolic tail, driving membrane tubulation in vitro. SNX3-retromer-dependent trafficking of AAVR to the trans-Golgi network is required for productive AAV2 transduction. |
In vitro reconstitution of SNX3-retromer with AAVR cytosolic tail, membrane tubulation assay, AAVR-knockout cell trafficking and transduction assay |
bioRxivpreprint |
Medium |
bio_10.1101_2025.11.22.689972
|