Gene description for SFPQ
Gene name splicing factor proline/glutamine-rich
Gene symbol SFPQ
Other names/aliases POMP100
PPP1R140
PSF
Species Homo sapiens
 Database cross references - SFPQ
ExoCarta ExoCarta_6421
Entrez Gene 6421
HGNC 10774
MIM 605199
UniProt P23246  
 SFPQ identified in exosomes derived from the following tissue/cell type
Melanoma cells 25950383    
Neuroblastoma cells 25944692    
Ovarian cancer cells 23333927    
Ovarian cancer cells 23333927    
Squamous carcinoma cells 20124223    
Thymus 23844026    
 Gene ontology annotations for SFPQ
Molecular Function
    protein binding GO:0005515 IPI
    core promoter binding GO:0001047 ISS
    transcription regulatory region DNA binding GO:0044212 IDA
    histone deacetylase binding GO:0042826 IPI
    transcription regulatory region sequence-specific DNA binding GO:0000976 ISS
    nucleotide binding GO:0000166 IEA
    poly(A) RNA binding GO:0044822 IDA
Biological Process
    regulation of circadian rhythm GO:0042752 ISS
    transcription, DNA-templated GO:0006351 IEA
    rhythmic process GO:0048511 IEA
    RNA splicing GO:0008380 TAS
    histone H3 deacetylation GO:0070932 ISS
    double-strand break repair via homologous recombination GO:0000724 IMP
    negative regulation of circadian rhythm GO:0042754 ISS
    alternative mRNA splicing, via spliceosome GO:0000380 IMP
    positive regulation of oxidative stress-induced intrinsic apoptotic signaling pathway GO:1902177 IDA
    negative regulation of transcription from RNA polymerase II promoter GO:0000122 IMP
    negative regulation of transcription, DNA-templated GO:0045892 ISS
    mRNA processing GO:0006397 TAS
Subcellular Localization
    nuclear matrix GO:0016363 IDA
    nucleus GO:0005634 IDA
    paraspeckles GO:0042382 IDA
    cytoplasm GO:0005737 IEA
    nucleoplasm GO:0005654 IDA
    chromatin GO:0000785 IDA
 Experiment description of studies that identified SFPQ in exosomes
1
Experiment ID 259
ISEV standards
EM
EV Biophysical techniques
TSG101
EV Cytosolic markers
FLOT1
EV Membrane markers
EV Negative markers
NTA
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25950383    
Organism Homo sapiens
Experiment description Proteome characterization of melanoma exosomes reveals a specific signature for metastatic cell lines
Authors Lazar I, Clement E, Ducoux-Petit M, Denat L, Soldan V, Dauvillier S, Balor S4, Burlet-Schiltz O1, Larue L, Muller C Nieto L
Journal name Pigment Cell Melanoma Res
Publication year 2015
Sample Melanoma cells
Sample name A375M
Isolation/purification methods Differential centrifugation
Unltracentrifugation
Sucrose density gradient
Flotation density 1.13 - 1.19 g/mL
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
2
Experiment ID 224
ISEV standards
EM|AFM
EV Biophysical techniques
Alix|TSG101
EV Cytosolic markers
CD63|CD81
EV Membrane markers
GOLGA2
EV Negative markers
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25944692    
Organism Homo sapiens
Experiment description Proteogenomic analysis reveals exosomes are more oncogenic than ectosomes
Authors Keerthikumar S, Gangoda L, Liem M, Fonseka P, Atukorala I, Ozcitti C, Mechler A, Adda CG, Ang CS, Mathivanan S
Journal name Oncotarget
Publication year 2015
Sample Neuroblastoma cells
Sample name SH-SY5Y
Isolation/purification methods Differential centrifugation
Ultracentrifugation
OptiPrep density gradient
Flotation density 1.10 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
Western blotting
3
Experiment ID 211
ISEV standards
EM
EV Biophysical techniques
TSG101|Alix
EV Cytosolic markers
EpCAM|TFRC
EV Membrane markers
cytochrome c|GOLGA2
EV Negative markers
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 23333927    
Organism Homo sapiens
Experiment description Characterization and proteomic analysis of ovarian cancer-derived exosomes.
Authors Liang B, Peng P, Chen S, Li L, Zhang M, Cao D, Yang J, Li H, Gui T, Li X, Shen K.
Journal name J Proteomics
Publication year 2013
Sample Ovarian cancer cells
Sample name IGROV1
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Sucrose density gradient
Flotation density 1.09-1.15 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
4
Experiment ID 212
ISEV standards
CEM
EV Biophysical techniques
TSG101|Alix
EV Cytosolic markers
EpCAM|TFRC
EV Membrane markers
Cytochrome C|GOLGA2
EV Negative markers
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 23333927    
Organism Homo sapiens
Experiment description Characterization and proteomic analysis of ovarian cancer-derived exosomes.
Authors Liang B, Peng P, Chen S, Li L, Zhang M, Cao D, Yang J, Li H, Gui T, Li X, Shen K.
Journal name J Proteomics
Publication year 2013
Sample Ovarian cancer cells
Sample name OVCAR-3
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Sucrose density gradient
Flotation density 1.09-1.15 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
5
Experiment ID 191
ISEV standards
EV Biophysical techniques
Alix
EV Cytosolic markers
CD81|CD9
EV Membrane markers
EV Negative markers
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 20124223    
Organism Homo sapiens
Experiment description Hypoxic tumor cell modulates its microenvironment to enhance angiogenic and metastatic potential by secretion of proteins and exosomes.
Authors Park JE, Tan HS, Datta A, Lai RC, Zhang H, Meng W, Lim SK, Sze SK.
Journal name Mol Cell Proteomics
Publication year 2010
Sample Squamous carcinoma cells
Sample name Squamous carcinoma cell (A431)
Isolation/purification methods Differential centrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
6
Experiment ID 217
ISEV standards
EM
EV Biophysical techniques
TSG101
EV Cytosolic markers
CD81|CD9|CD63
EV Membrane markers
EV Negative markers
NTA
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 23844026    
Organism Homo sapiens
Experiment description Characterization of human thymic exosomes.
Authors Skogberg G, Gudmundsdottir J, van der Post S, Sandstrom K, Bruhn S, Benson M, Mincheva-Nilsson L, Baranov V, Telemo E, Ekwall O.
Journal name PLoS One
Publication year 2013
Sample Thymus
Sample name Normal-Thymus
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
 Protein-protein interactions for SFPQ
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 NONO 4841
Two-hybrid Homo sapiens
Affinity Capture-Western Homo sapiens
Reconstituted Complex Homo sapiens
2 HN1 51155
Two-hybrid Homo sapiens
3 FHL2  
Two-hybrid Homo sapiens
4 SFPQ 6421
Two-hybrid Homo sapiens
Two-hybrid Homo sapiens
5 PTBP1 5725
Invivo Homo sapiens
Invitro Homo sapiens
Reconstituted Complex Homo sapiens
6 UBC 7316
Two-hybrid Homo sapiens
Two-hybrid Homo sapiens
7 TOP1 7150
Invivo Homo sapiens
8 EXOSC5 56915
Two-hybrid Homo sapiens
View the network image/svg+xml
 Pathways in which SFPQ is involved
No pathways found





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