Gene description for CLDN4
Gene name claudin 4
Gene symbol CLDN4
Other names/aliases CPE-R
CPER
CPETR
CPETR1
WBSCR8
hCPE-R
Species Homo sapiens
 Database cross references - CLDN4
ExoCarta ExoCarta_1364
Vesiclepedia VP_1364
Entrez Gene 1364
HGNC 2046
MIM 602909
UniProt O14493  
 CLDN4 identified in exosomes derived from the following tissue/cell type
Colorectal cancer cells 19837982    
Colorectal cancer cells 23161513    
Colorectal cancer cells 23161513    
Colorectal cancer cells 23161513    
Colorectal cancer cells 25890246    
Colorectal cancer cells 25890246    
Colorectal cancer cells 34887515    
Hepatocellular carcinoma cells 26054723    
Hepatocellular carcinoma cells 26054723    
Ovarian cancer cells 19619303    
Plasma 19619303    
 Gene ontology annotations for CLDN4
Molecular Function
    transmembrane signaling receptor activity GO:0004888 TAS
    structural molecule activity GO:0005198 IEA
    chloride channel activity GO:0005254 IEA
    protein binding GO:0005515 IPI
    identical protein binding GO:0042802 ISS
Biological Process
    cell adhesion GO:0007155 IBA
    female pregnancy GO:0007565 IEA
    circadian rhythm GO:0007623 IEA
    calcium-independent cell-cell adhesion via plasma membrane cell-adhesion molecules GO:0016338 ISS
    regulation of cell morphogenesis GO:0022604 IMP
    positive regulation of cell migration GO:0030335 IMP
    response to progesterone GO:0032570 IEA
    establishment of skin barrier GO:0061436 IMP
    renal absorption GO:0070293 ISS
    bicellular tight junction assembly GO:0070830 IBA
    positive regulation of wound healing GO:0090303 IMP
    paracellular transport GO:0160184 ISS
    chloride transmembrane transport GO:1902476 IEA
    positive regulation of metallopeptidase activity GO:1905050 IMP
Subcellular Localization
    plasma membrane GO:0005886 IBA
    plasma membrane GO:0005886 IDA
    plasma membrane GO:0005886 IMP
    cell-cell junction GO:0005911 IDA
    bicellular tight junction GO:0005923 IBA
    bicellular tight junction GO:0005923 IDA
    bicellular tight junction GO:0005923 ISS
    basal plasma membrane GO:0009925 IEA
    apical plasma membrane GO:0016324 IEA
    apicolateral plasma membrane GO:0016327 IEA
    lateral plasma membrane GO:0016328 IEA
    chloride channel complex GO:0034707 IEA
    tight junction GO:0070160 IDA
 Experiment description of studies that identified CLDN4 in exosomes
1
Experiment ID 21
MISEV standards
✔
EM|IEM
Biophysical techniques
✔
Alix|TSG101|HSP70|CD63
Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method
Mass spectrometry   
PubMed ID 19837982    
Organism Homo sapiens
Experiment description Proteomic and bioinformatic analysis of immunoaffinity-purified exosomes derived from the human colon tumor cell line LIM1215.
Authors "Suresh Mathivanan, Justin W.E. Lim, Bow J. Tauro, Hong Ji, Robert L. Moritz and Richard J. Simpson"
Journal name MCP
Publication year 2009
Sample Colorectal cancer cells
Sample name LIM1215
Isolation/purification methods Filtration
Ultracentrifugation
Sucrose density gradient
Flotation density 1.10-1.12 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [Orbitrap]
Western blotting
2
Experiment ID 207
MISEV standards
✔
EM
Biophysical techniques
✔
TSG101|HSP70|FLOT1
Enriched markers
✔
VDAC
Negative markers
✔
NTA
Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 23161513    
Organism Homo sapiens
Experiment description Proteomic analysis of exosomes from mutant KRAS colon cancer cells identifies intercellular transfer of mutant KRAS.
Authors "Demory Beckler M, Higginbotham JN, Franklin JL, Ham AJ, Halvey PJ, Imasuen IE, Whitwell C, Li M, Liebler DC, Coffey RJ."
Journal name Mol Cell Proteomics
Publication year 2012
Sample Colorectal cancer cells
Sample name DKO-1
Isolation/purification methods Differential centrifugation
Filtration
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
3
Experiment ID 208
MISEV standards
✔
EM
Biophysical techniques
✔
TSG101|HSP70|FLOT1
Enriched markers
✔
VDAC
Negative markers
✔
NTA
Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 23161513    
Organism Homo sapiens
Experiment description Proteomic analysis of exosomes from mutant KRAS colon cancer cells identifies intercellular transfer of mutant KRAS.
Authors "Demory Beckler M, Higginbotham JN, Franklin JL, Ham AJ, Halvey PJ, Imasuen IE, Whitwell C, Li M, Liebler DC, Coffey RJ."
Journal name Mol Cell Proteomics
Publication year 2012
Sample Colorectal cancer cells
Sample name Dks-8
Isolation/purification methods Differential centrifugation
Filtration
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
4
Experiment ID 209
MISEV standards
✘ Biophysical techniques
✔
TSG101|HSP70|FLOT1
Enriched markers
✔
VDAC
Negative markers
✔
NTA
Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 23161513    
Organism Homo sapiens
Experiment description Proteomic analysis of exosomes from mutant KRAS colon cancer cells identifies intercellular transfer of mutant KRAS.
Authors "Demory Beckler M, Higginbotham JN, Franklin JL, Ham AJ, Halvey PJ, Imasuen IE, Whitwell C, Li M, Liebler DC, Coffey RJ."
Journal name Mol Cell Proteomics
Publication year 2012
Sample Colorectal cancer cells
Sample name DLD-1
Isolation/purification methods Differential centrifugation
Filtration
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
5
Experiment ID 285
MISEV standards
✔
CEM
Biophysical techniques
✔
Alix|TSG101|CD63|CD81|EpCAM
Enriched markers
✘ Negative markers
✔
DLS
Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25890246    
Organism Homo sapiens
Experiment description Highly-purified exosomes and shed microvesicles isolated from the human colon cancer cell line LIM1863 by sequential centrifugal ultrafiltration are biochemically and functionally distinct.
Authors "Xu R, Greening DW, Rai A, Ji H, Simpson RJ."
Journal name Methods
Publication year 2015
Sample Colorectal cancer cells
Sample name LIM1863 - Sequential centrifugal ultrafiltration - Rep 1
Isolation/purification methods Differential centrifugation
Filtration
Sequential centrifugal ultrafiltration
Centrifugal concentration
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
Western blotting
6
Experiment ID 286
MISEV standards
✔
CEM
Biophysical techniques
✔
Alix|TSG101|CD63|CD81|EpCAM
Enriched markers
✘ Negative markers
✔
DLS
Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25890246    
Organism Homo sapiens
Experiment description Highly-purified exosomes and shed microvesicles isolated from the human colon cancer cell line LIM1863 by sequential centrifugal ultrafiltration are biochemically and functionally distinct.
Authors "Xu R, Greening DW, Rai A, Ji H, Simpson RJ."
Journal name Methods
Publication year 2015
Sample Colorectal cancer cells
Sample name LIM1863 - Sequential centrifugal ultrafiltration - Rep 2
Isolation/purification methods Differential centrifugation
Filtration
Sequential centrifugal ultrafiltration
Centrifugal concentration
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
Western blotting
7
Experiment ID 1203
MISEV standards
✔
EM
Biophysical techniques
✔
SDCBP|FLOT1|CD9|CD81|CD63|EPCAM|GAPDH|LAMP1|TFRC|CD151|CD82|LAMP2|RAB35|TSG101|FLOT2|RAB5B|ICAM1|RAB5A
Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 34887515    
Organism Homo sapiens
Experiment description Supermeres are functional extracellular nanoparticles replete with disease biomarkers and therapeutic targets
Authors "Zhang Q, Jeppesen DK, Higginbotham JN, Graves-Deal R, Trinh VQ, Ramirez MA, Sohn Y, Neininger AC, Taneja N, McKinley ET, Niitsu H, Cao Z, Evans R, Glass SE, Ray KC, Fissell WH, Hill S, Rose KL, Huh WJ, Washington MK, Ayers GD, Burnette DT, Sharma S, Rome LH, Franklin JL, Lee YA, Liu Q, Coffey RJ."
Journal name Nat Cell Biol
Publication year 2021
Sample Colorectal cancer cells
Sample name DiFi
Isolation/purification methods Differential centrifugation
Filtration
Centrifugal ultrafiltration
Ultracentrifugation
OptiPrep density gradient centrifugation
Flotation density -
Molecules identified in the study Protein
miRNA
Methods used in the study Western blotting
Mass spectrometry
RNA sequencing
8
Experiment ID 235
MISEV standards
✔
EM
Biophysical techniques
✔
TSG101|Alix|HSC70|GAPDH
Enriched markers
✔
HSP90B1
Negative markers
✔
qNano
Particle analysis
Identified molecule mRNA
Identification method RNA Sequencing
PubMed ID 26054723    
Organism Homo sapiens
Experiment description Hepatocellular carcinoma-derived exosomes promote motility of immortalized hepatocyte through transfer of oncogenic proteins and RNAs
Authors "He M, Qin H, Poon TC, Sze SC, Ding X, Co NN, Ngai SM, Chan TF, Wong N"
Journal name Carcinogenesis
Publication year 2015
Sample Hepatocellular carcinoma cells
Sample name HKCI-8
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Sucrose density gradient
Flotation density 1.13-1.19 g/mL
Molecules identified in the study Protein
RNA
Methods used in the study Western blotting
Mass spectrometry
RT-PCR
RNA Sequencing
9
Experiment ID 236
MISEV standards
✔
EM
Biophysical techniques
✔
TSG101|Alix|HSC70|GAPDH
Enriched markers
✔
HSP90B1
Negative markers
✔
qNano
Particle analysis
Identified molecule mRNA
Identification method RNA Sequencing
PubMed ID 26054723    
Organism Homo sapiens
Experiment description Hepatocellular carcinoma-derived exosomes promote motility of immortalized hepatocyte through transfer of oncogenic proteins and RNAs
Authors "He M, Qin H, Poon TC, Sze SC, Ding X, Co NN, Ngai SM, Chan TF, Wong N"
Journal name Carcinogenesis
Publication year 2015
Sample Hepatocellular carcinoma cells
Sample name MHCC97L
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Sucrose density gradient
Flotation density 1.13-1.19 g/mL
Molecules identified in the study Protein
RNA
Methods used in the study Western blotting
Mass spectrometry
RT-PCR
RNA Sequencing
10
Experiment ID 67
MISEV standards
✔
EM
Biophysical techniques
✘ Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Western blotting
Immunoelectron Microscopy
PubMed ID 19619303    
Organism Homo sapiens
Experiment description Claudin-containing exosomes in the peripheral circulation of women with ovarian cancer.
Authors "Li J, Sherman-Baust CA, Tsai-Turton M, Bristow RE, Roden RB, Morin PJ"
Journal name BMC_CANCER
Publication year 2009
Sample Ovarian cancer cells
Sample name BG-1
Isolation/purification methods Differential centrifugation
Sucrose density gradient
Flotation density 1.15-1.21 g/mL
Molecules identified in the study Protein
Methods used in the study Western blotting
Immunoelectron Microscopy
11
Experiment ID 68
MISEV standards
✘ Biophysical techniques
✘ Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Western blotting
PubMed ID 19619303    
Organism Homo sapiens
Experiment description Claudin-containing exosomes in the peripheral circulation of women with ovarian cancer.
Authors "Li J, Sherman-Baust CA, Tsai-Turton M, Bristow RE, Roden RB, Morin PJ"
Journal name BMC_CANCER
Publication year 2009
Sample Plasma
Sample name Plasma - Ovarian cancer
Isolation/purification methods Differential centrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
 Protein-protein interactions for CLDN4
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 TMEM52B 120939
Two-hybrid Homo sapiens
2 FAM209A 200232
Two-hybrid Homo sapiens
3 GJA8  
Two-hybrid Homo sapiens
4 GOLM1 51280
Two-hybrid Homo sapiens
5 TJP1 7082
Reconstituted Complex Homo sapiens
6 TMEM237 65062
Two-hybrid Homo sapiens
7 ARL13B 200894
Two-hybrid Homo sapiens
8 HSD17B13  
Two-hybrid Homo sapiens
9 SYT2  
Two-hybrid Homo sapiens
10 SHBG 6462
Two-hybrid Homo sapiens
11 CLEC14A  
Two-hybrid Homo sapiens
12 TSPO2  
Two-hybrid Homo sapiens
13 FFAR2  
Two-hybrid Homo sapiens
14 HIATL1 84641
Two-hybrid Homo sapiens
15 TRIM59  
Two-hybrid Homo sapiens
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