KC-3410

CHOK1-cyno-CRTAM-Cell-Line

34376

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Background of CHOK1-cyno-CRTAM-Cell-Line

CRTAM, also known as CD355, is a Protein Coding gene. Among its related pathways are Innate Immune System and Class I MHC mediated antigen processing and presentation. Gene Ontology (GO) annotations related to this gene include signaling receptor binding. An important paralog of this gene is CADM2. In addition, The CRTAM gene is upregulated in CD4-positive and CD8-positive T cells and encodes a type I transmembrane protein with V and C1-like Ig domains.

Specifications

Catalog Number	KC-3410
Cell Line Name	CHOK1-cyno-CRTAM-Cell-Line
Host Cell Line	CHOK1
Description	Stable CHOK1 cell line expressing exogenous cyno CRTAM gene
Quantity	Two vials of frozen cells (≥2-10⁶/vial)
Stability	Stable in culture over a minimum of 10 passages
Application	Drug screening and biological assays
Freezing Medium	70% RPMI1640 + 20% FBS + 10% DMSO
Propagation Medium	RPMI1640 + 10% FBS + 10μg/ml Puromycin
Selection Marker	Puromycin
Morphology	Epithelial
Subculture	Split saturated culture 1:4-1:8 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	Approximately 30 hours
Mycoplasma Status	Negative
In Vivo Validation	NA

Cell Line Generation

CHOK1 cyno CRTAM Cell Line was generated using a lentiviral vector expressing the cyno CRTAM sequence.

Characterization

Figure 1: Characterization of cyno CRTAM overexpression in the CHO-K1 cyno CRTAM stable clone using FACS sequence.

Figure 2: Characterization of endogenous cyno CRTAM expression in CHO-K1 cell using FACS.

Cell Resuscitation

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

Cell Freezing

Prepare the freezing medium (70% RPMI1640 + 20% FBS + 10% DMSO) fresh immediately before use.
Keep the freezing medium on ice and label cryovials.
Transfer cells to a sterile, conical centrifuge tube, and count the cells.
Centrifuge the cells at 250×g for 5 minutes at room temperature and carefully aspirate off the medium.
Resuspend the cells at a density of at least 3×10⁶ cells/mL in chilled freezing medium.
Aliquot 1 mL of the cell suspension into each cryovial.
Freeze cells in the CoolCell freezing container overnight in a -80°C freezer.
Transfer vials to liquid nitrogen for long-term storage.

References

Garay E, Patiño-López G, Islas S, Alarcón L, Canche-Pool E, Valle-Rios R, Medina-Contreras O, Granados G, Chávez-Munguía B, Juaristi E, Ortiz-Navarrete V, González-Mariscal L. CRTAM: A molecule involved in epithelial cell adhesion. J Cell Biochem. 2010 Sep 1;111(1):111-22.
Patiño-Lopez G, Hevezi P, Lee J, Willhite D, Verge GM, Lechner SM, Ortiz-Navarrete V, Zlotnik A. Human class-I restricted T cell associated molecule is highly expressed in the cerebellum and is a marker for activated NKT and CD8+ T lymphocytes. J Neuroimmunol. 2006 Feb;171(1-2):145-55.