KC-2152

CHOK1-DLL3 Cell Line

23490

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Background of CHOK1-DLL3 Cell Line

This gene encodes a member of the delta protein ligand family. This family functions as Notch ligands that are characterized by a DSL domain, EGF repeats, and a transmembrane domain. Mutations in this gene cause autosomal recessive spondylocostal dysostosis 1. Two transcript variants encoding distinct isoforms have been identified for this gene.

Specifications

Catalog Number	KC-2152
Cell Line Name	CHOK1-DLL3 Cell Line
Host Cell Line	CHOK1
Description	Stable CHOK1 cell line expressing exogenous DLL3 gene
Quantity	One vial 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 DLL3 cell line was generated using a lentiviral vector expressing the DLL3 sequence.

Characterization

Figure 1: Characterization of endogenous DLL3 expression in CHOK1 using FACS.

Figure 2: Characterization of DLL3 overexpression in the CHO-K1 DLL3 stable clone 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

Tanaka K, Isse K, Fujihira T, Takenoyama M, Saunders L, Bheddah S, Nakanishi Y, Okamoto I. Prevalence of Delta-like protein 3 expression in patients with small cell lung cancer. Lung Cancer. 2018 Jan;115:116-120. doi: 10.1016/j.lungcan.2017.11.018. Epub 2017 Nov 22. PMID: 29290251.
Whittock NV, Ellard S, Duncan J, de Die-Smulders CE, Vles JS, Turnpenny PD. Pseudodominant inheritance of spondylocostal dysostosis type 1 caused by two familial delta-like 3 mutations. Clin Genet. 2004 Jul;66(1):67-72. doi: 10.1111/j.0009-9163.2004.00272.x. PMID: 15200511.

Use License Agreement

Research Use Only.

Not for use in diagnostic procedures or therapeutic applications.

Redistribution of the cell line or its derivatives is prohibited without prior written permission from Kyinno Biotechnology.