KC-2524

CHOK1-c-Met-Cell-Line

24234

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Background of CHOK1-c-Met-Cell-Line

c-Met, also named as hepatocyte growth factor receptor (HGFR), is a single pass tyrosine kinase receptor, which is mainly expressed on the cells of epithelial origin, and play essential role in embryonic development, organogenesis and wound healing. HGF and its splicing isoform are the only know ligands of cMet. Abnormal activation of cMet due to overexpression of Met or its ligands, fusion mutation as well as exon14 skipping have been implicated in oncogenesis.

Specifications

Catalog Number	KC-2524
Cell Line Name	CHOK1-c-Met-Cell-Line
Host Cell Line	Chinese hamster ovary CHO-K1 cell line
Description	Stable CHOK1 cell line expressing exogenous human cMet 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-like
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
In Vivo Validation	NA

Cell Line Generation

CHOK1 human cMet cell line was generated using a lentiviral vector expressing the human cMet sequence.

Characterization

Cell Resuscitation

Prewarm culture medium (RPMI1640 + 10% FBS + 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 1-2 × 10⁵ cells/mL.

Cell Freezing

Prepare the freezing medium (70% RPMI-1640 + 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

Saffroy, R. et al. MET exon 14 mutations as targets in routine molecular analysis of primary sarcomatoid carcinoma of the lung. Oncotarget 8, 42428ÿ42437 (2017).
Peschard, P. & Park, M. From Tpr-Met to Met, tumorigenesis and tubes. Oncogene 26, 1276ÿ1285 (2007).