KC-4756

CHOK1-DLL3-EGF6 Cell Line

53503

Home » CHOK1-DLL3-EGF6 Cell Line

Background of CHOK1-DLL3-EGF6 Cell Line

DLL3 (Delta Like Canonical Notch Ligand 3) is a Protein Coding gene. 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.EGF (Epidermal Growth Factor) is a Protein Coding gene. This gene encodes a member of the epidermal growth factor superfamily. The encoded preproprotein is proteolytically processed to generate the 53-amino acid epidermal growth factor peptide. This protein acts a potent mitogenic factor that plays an important role in the growth, proliferation and differentiation of numerous cell types. This protein acts by binding with high affinity to the cell surface receptor, epidermal growth factor receptor. Defects in this gene are the cause of hypomagnesemia type 4. Dysregulation of this gene has been associated with the growth and progression of certain cancers. Alternative splicing results in multiple transcript variants, at least one of which encodes a preproprotein that is proteolytically processed.

Specifications

Catalog Number	KC-4756
Cell Line Name	CHOK1-DLL3-EGF6 Cell Line
Host Cell Line	CHOK1
Description	CHOK1 cell line stably expressing exogenous DLL3-EGF6 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 + 10 μg/mL Puromycin
Selection Marker	Puromycin
Morphology	Fibroblastoid cells growing as monolayer
Subculture	Split saturated culture 1:4-1:8 every 2-3 days; seed out at about 1-2 × 10⁵ cells/mL
Incubation	37 °C with 5% CO₂
Storage	Liquid nitrogen immediately upon receiving
Doubling Time	Approximately 24 hours
Mycoplasma Status	Negative

Cell Line Generation

CHOK1-DLL3-EGF6 cell line was generated using a lentiviral vector expressing the DLL3 EGF6 sequence.

Characterization

Figure 1: Figure 1: Characterization of DLL3-EGF6 overexpressing in CHOK1 stable clones using FACS.

Figure2: Characterization of CHOK1-DLL3-EGF6 cell line stable clone using PCR sequencing.

Cell Resuscitation

1. Prewarm culture medium (RPMI1640 supplemented with 10% FBS and 10 μg/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 9.0 mL 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 1:4-1:8 every 2-3 days; seed out at about 1-2 × 10⁵ cells/mL.

Cell Freezing

1. Prepare the freezing medium (70% RPMI1640 + 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. 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.
2. Uddin M, Lau LC, Seumois G, Vijayanand P, Staples KJ, Bagmane D, Cornelius V, Dorinsky P, Davies DE, Djukanović R. EGF-induced bronchial epithelial cells drive neutrophil chemotactic and anti-apoptotic activity in asthma. PLoS One. 2013 Sep 11;8(9):e72502. doi: 10.1371/journal.pone.0072502. PMID: 24039773; PMCID: PMC3770689.