KC-3056

HT29-B7H4 Cell Line

Home » HT29-B7H4 Cell Line

Background

B7H4, also named as B7x and B7S1, is transmembrane glycosylated protein belonging to B7 family of immunomodulatory proteins. B7H4 is expressed on the surface of many immune cells, including activated lymphocytes, macrophages, monocytes, dendritic cells, it can dampen T cells response and induces cell cycle arrest of T cells.

Specifications

Catalog Number:
KC-3056
Cell Line Name:
HT29-B7H4 Cell Line
Host Cell Line:
Description:
Stable BHK21 clone expressing exogenous human B7H4 gene
Quantity:
One vial of frozen cells (5×106 per vial)
Stability:
Stable in culture over a minimum of 10 passages
Application:
Drug screening and biological assays
Freeze Medium:
70% RPMI1640+20% FBS+10% DMSO
Propagation Medium:
RPMI1640+10%FBS+1µg/mL Puromycin
Selection Marker:
Puromycin
Morphology:
Epithelial
Subculture:
Split saturated culture 1:3-1:5 every 2-3 days; seed out at about 1-3 × 105 cells/mL
Incubation:
37 °C with 5% CO2
Storage:
Liquid nitrogen immediately upon receiving
Doubling Time:
Mycoplasma Status:
Negative

Cell Line Generation

HT29 human B7H4 Cell Line was generated using a retroviral vector expressing the human B7H4 sequence.

Characterization

Application

Cell Resuscitation

1. Prewarm culture medium (RPMI1640 + 10% FBS + 1µg/mL Puromycin) in a 37°C water bath.
2. Thaw the frozen vial in a 37°C water bath for 1-2 minutes.
3. Transfer the vial into biosafety cabinet, and wipe the surface with 70% ethanol.
4. Unscrew the top of the vial and transfer the cell suspension gently into a sterile centrifuge tube containing 9.0mL complete culture medium.
5. Spin at ~ 125 × g for 5-7 minutes at room temperature, and discard the supernatant without disturbing the pellet.
6. Resuspend cell pellet with the appropriate volume of complete medium and transfer the cell suspension into a T25 culture flask.
7. Incubate the flask at 37°C, 5% CO2 incubator.
8. Split saturated culture 1:3-1:5 every 2-3 days; seed out at about 1-3 × 105 cells/mL.

Cell Freezing

1. Prepare the freezing medium (70% RPMI-1640 + 20% FBS + 10% DMSO) fresh immediately before use.
2. Keep the freezing medium on ice and label cryovials.
3. Transfer cells to a sterile, conical centrifuge tube, and count the cells.
4. Centrifuge the cells at 250×g for 5 minutes at room temperature and carefully aspirate off the medium.
5. Resuspend the cells at a density of at least 3×106 cells/mL in chilled freezing medium.
6. Aliquot 1 mL of the cell suspension into each cryovial.
7. Freeze cells in the CoolCell freezing container overnight in a -80°C freezer.
8. Transfer vials to liquid nitrogen for long-term storage

References

1. Sica, Gabriel L, In-Hak Choi, Gefeng Zhu, Koji Tamada, Sheng-Dian Wang, Hideto Tamura, Andrei I Chapoval, Dallas B Flies, J°îrgen Bajorath, and Lieping Chen. 2003. ¡ùB7-H4, a Molecule of the B7 Family, Negatively Regulates T Cell Immunity.¡ì Immunity 18 (6): 849ÿ61. doi:10.1016/S1074-7613(03)00152-3.
2. Prasad, Durbaka V R, Sabrina Richards, Xoi Muoi Mai, and Chen Dong. 2003. ¡ùB7S1, a Novel B7 Family Member That Negatively Regulates T Cell Activation.¡ì Immunity 18 (6): 863ÿ73. doi:10.1016/S1074- 7613(03)00147-X.
3. Podojil, Joseph R, and Stephen D Miller. 2017. ¡ùPotential Targeting of B7-H4 for the Treatment of Cancer.¡ì Immunological Reviews 276 (1). Wiley/Blackwell (10.1111): 40ÿ51. doi:10.1111/imr.12530.
Please enable JavaScript in your browser to complete this form.