Gene description for SPP1
Gene name secreted phosphoprotein 1
Gene symbol SPP1
Other names/aliases BNSP
BSPI
ETA-1
OPN
Species Homo sapiens
 Database cross references - SPP1
ExoCarta ExoCarta_6696
Entrez Gene 6696
HGNC 11255
MIM 166490
UniProt P10451  
 SPP1 identified in exosomes derived from the following tissue/cell type
Ovarian cancer cells 23333927    
Ovarian cancer cells 23333927    
 Gene ontology annotations for SPP1
Molecular Function
    cytokine activity GO:0005125 IEA
    extracellular matrix binding GO:0050840 IEA
    protein binding GO:0005515 IPI
Biological Process
    extracellular matrix disassembly GO:0022617 TAS
    inflammatory response GO:0006954 IEA
    response to vitamin D GO:0033280 IDA
    cell adhesion GO:0007155 IEA
    osteoblast differentiation GO:0001649 IEA
    extracellular matrix organization GO:0030198 TAS
    decidualization GO:0046697 TAS
    positive regulation of cell-substrate adhesion GO:0010811 IEA
    response to steroid hormone GO:0048545 IEA
    neutrophil chemotaxis GO:0030593 IEA
    negative regulation of collateral sprouting of intact axon in response to injury GO:0048685 IEA
    positive regulation of bone resorption GO:0045780 IEA
    biomineral tissue development GO:0031214 IEA
    embryo implantation GO:0007566 TAS
Subcellular Localization
    extracellular space GO:0005615 IDA
    perinuclear region of cytoplasm GO:0048471 IEA
    apical part of cell GO:0045177 IEA
    extracellular exosome GO:0070062 IDA
    extracellular region GO:0005576 TAS
    cell projection GO:0042995 IEA
 Experiment description of studies that identified SPP1 in exosomes
1
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
2
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
 Protein-protein interactions for SPP1
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 SGTA 6449
Two-hybrid Homo sapiens
2 CTNNBL1  
Two-hybrid Homo sapiens
3 ITGAV 3685
Invitro Homo sapiens
Invivo Homo sapiens
4 CD44 960
Invitro Homo sapiens
Affinity Capture-MS Homo sapiens
5 ITGA5 3678
Affinity Capture-MS Homo sapiens
Reconstituted Complex Homo sapiens
6 PDLIM7 9260
Two-hybrid Homo sapiens
7 IGFBP5 3488
Affinity Capture-MS Homo sapiens
Reconstituted Complex Homo sapiens
View the network image/svg+xml
 Pathways in which SPP1 is involved
PathwayEvidenceSource
Degradation of the extracellular matrix TAS Reactome
Integrin cell surface interactions TAS Reactome
Signaling by PDGF TAS Reactome





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