Gene description for PRPF8
Gene name pre-mRNA processing factor 8
Gene symbol PRPF8
Other names/aliases HPRP8
PRP8
PRPC8
RP13
SNRNP220
Species Homo sapiens
 Database cross references - PRPF8
ExoCarta ExoCarta_10594
Entrez Gene 10594
HGNC 17340
MIM 607300
UniProt Q6P2Q9  
 PRPF8 identified in exosomes derived from the following tissue/cell type
Nasopharyngeal carcinoma cells 25857718    
Nasopharyngeal carcinoma cells 25857718    
Nasopharyngeal carcinoma cells 25857718    
Neuroblastoma cells 25944692    
Ovarian cancer cells 23333927    
Ovarian cancer cells 23333927    
Thymus 23844026    
 Gene ontology annotations for PRPF8
Molecular Function
    pre-mRNA intronic binding GO:0097157 IBA
    second spliceosomal transesterification activity GO:0000386 IBA
    K63-linked polyubiquitin binding GO:0070530 IDA
    poly(A) RNA binding GO:0044822 IDA
    U6 snRNA binding GO:0017070 IBA
    U5 snRNA binding GO:0030623 IBA
    U1 snRNA binding GO:0030619 IBA
    protein binding GO:0005515 IPI
    U2 snRNA binding GO:0030620 IBA
Biological Process
    RNA splicing GO:0008380 TAS
    mRNA splicing, via spliceosome GO:0000398 TAS
    gene expression GO:0010467 TAS
    mRNA processing GO:0006397 TAS
    spliceosomal tri-snRNP complex assembly GO:0000244 IDA
    RNA splicing, via transesterification reactions GO:0000375 TAS
Subcellular Localization
    U5 snRNP GO:0005682 TAS
    nuclear speck GO:0016607 IEA
    membrane GO:0016020 IDA
    nucleus GO:0005634 IDA
    catalytic step 2 spliceosome GO:0071013 IDA
    nucleoplasm GO:0005654 TAS
 Experiment description of studies that identified PRPF8 in exosomes
1
Experiment ID 219
ISEV standards
✔
EM
EV Biophysical techniques
✘ EV Cytosolic markers
✔
CD63|CD9
EV Membrane markers
✔
HSP90B1
EV Negative markers
✔
qNano
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25857718    
Organism Homo sapiens
Experiment description Proteomic analysis of exosomes from nasopharyngeal carcinoma cell identifies intercellular transfer of angiogenic proteins
Authors Chan YK, Zhang H, Liu P, Tsao GS, Li Lung M, Mak NK, Ngok-Shun Wong R, Ying-Kit Yue P
Journal name Int J Cancer
Publication year 2015
Sample Nasopharyngeal carcinoma cells
Sample name C666-1
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Sucrose density gradient
Flotation density 1.17-1.19 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
2
Experiment ID 220
ISEV standards
✔
EM
EV Biophysical techniques
✘ EV Cytosolic markers
✔
CD63|CD9
EV Membrane markers
✔
HSP90B1
EV Negative markers
✔
qNano
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25857718    
Organism Homo sapiens
Experiment description Proteomic analysis of exosomes from nasopharyngeal carcinoma cell identifies intercellular transfer of angiogenic proteins
Authors Chan YK, Zhang H, Liu P, Tsao GS, Li Lung M, Mak NK, Ngok-Shun Wong R, Ying-Kit Yue P
Journal name Int J Cancer
Publication year 2015
Sample Nasopharyngeal carcinoma cells
Sample name NP69
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Sucrose density gradient
Flotation density 1.17-1.19 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
3
Experiment ID 221
ISEV standards
✔
EM
EV Biophysical techniques
✘ EV Cytosolic markers
✔
CD63|CD9
EV Membrane markers
✔
HSP90B1
EV Negative markers
✔
qNano
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25857718    
Organism Homo sapiens
Experiment description Proteomic analysis of exosomes from nasopharyngeal carcinoma cell identifies intercellular transfer of angiogenic proteins
Authors Chan YK, Zhang H, Liu P, Tsao GS, Li Lung M, Mak NK, Ngok-Shun Wong R, Ying-Kit Yue P
Journal name Int J Cancer
Publication year 2015
Sample Nasopharyngeal carcinoma cells
Sample name NP460
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Sucrose density gradient
Flotation density 1.17-1.19 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
4
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
5
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
6
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
7
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 PRPF8
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 SNRPB 6628
Affinity Capture-MS Homo sapiens
2 RNU11 26824
Affinity Capture-MS Homo sapiens
3 EFTUD2 9343
Invivo Homo sapiens
4 SNRNP40 9410
Invivo Homo sapiens
Affinity Capture-MS Homo sapiens
5 CD2BP2 10421
Affinity Capture-MS Homo sapiens
6 RNPS1 10921
Affinity Capture-MS Homo sapiens
7 MYC  
Affinity Capture-MS Homo sapiens
8 RNU12  
Affinity Capture-MS Homo sapiens
View the network image/svg+xml
 Pathways in which PRPF8 is involved
PathwayEvidenceSource
mRNA Splicing - Major Pathway TAS Reactome
mRNA Splicing - Minor Pathway TAS Reactome





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