EB3 Cells
General information
Description | The EB3 cell line is a mouse embryonic stem (ES) cell line that has been extensively studied for its response to cell–cell contact. One of the key features of the EB3 line is its expression of connexin30.3 (Cx30.3), a connexin isoform specifically expressed in the undifferentiated state of these cells. Cx30.3 expression is highly responsive to cell–cell contact, as demonstrated in experiments where hanging drop culture, which increases cell–cell interaction, led to a significant 1.73-fold increase in Cx30.3 expression compared to single cell cultures. This contact-dependent upregulation of Cx30.3 is mediated through the E-cadherin signaling pathway, and knockdown experiments with ß-catenin, a downstream factor of cadherin signaling, have confirmed its involvement. Inhibition of E-cadherin or β-catenin led to a reduction in Cx30.3 expression, indicating that cell–cell contact activation of Cx30.3 is at least partially regulated by this pathway. Interestingly, this cell contact response is specific to connexin30.3, as the expression of connexin43 (Cx43), another connexin isoform, did not exhibit the same level of sensitivity to cell contact in these experiments. The EB3 cell line is a useful model for studying the mechanisms of cell–cell communication and the role of gap junctions in early embryonic development. The unique expression pattern of Cx30.3 in response to contact suggests that it may play a role as a signaling mediator during tissue morphogenesis and differentiation in the undifferentiated stem cell state. |
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Organism | Human |
Tissue | Bone |
Disease | Burkitt lymphoma |
Metastatic site | Bone |
Applications | 3D cell culture, Immunology |
Synonyms | EB-3, Epstein-Barr-3, GM04679 |
Characteristics
Age | 3 years |
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Gender | Male |
Ethnicity | African |
Morphology | Lymphoblast |
Cell type | B lymphocyte |
Growth properties | Suspension |
Identifiers / Biosafety / Citation
Citation | EB3 (Cytion catalog number 300373) |
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Biosafety level | 2 |
Expression / Mutation
Surface antigens | HLA A3, Aw32, Cw2 |
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Isoenzymes | G6PD, A |
Viruses | EBV (EBNA pos) |
Handling
Culture Medium | RPMI 1640, w: 2.1 mM stable Glutamine, w: 2.0 g/L NaHCO3 (Cytion article number 820700a) |
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Medium supplements | Supplement the medium with 10% FBS |
Subculturing | Gently homogenize the cell suspension in the flask by pipetting up and down, then take a representative sample to determine the cell density per ml. Dilute the suspension to achieve a cell concentration of 1 x 10^5 cells/ml with fresh culture medium, and aliquot the adjusted suspension into new flasks for further cultivation. |
Freeze medium | CM-1 (Cytion catalog number 800100) |
Handling of cryopreserved cultures |
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Quality control / Genetic profile / HLA
Sterility | Mycoplasma contamination is excluded using both PCR-based assays and luminescence-based mycoplasma detection methods. To ensure there is no bacterial, fungal, or yeast contamination, cell cultures are subjected to daily visual inspections. |
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STR profile |
Amelogenin: x,y
CSF1PO: 12,15
D13S317: 12,14
D16S539: 10,12
D5S818: 9,1
D7S820: 11
TH01: 7
TPOX: 6,9
vWA: 17,19
D3S1358: 15,16
D21S11: 29
D18S51: 15,17
Penta E: 14,16
Penta D: 10,11
D8S1179: 14
FGA: 22
D6S1043: 11,13
D2S1338: 17,22
D12S391: 15
D19S433: 12.2,16.2
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