KC-1162

COS7-Cell-Line-(Not-for-sale)

21627

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Background of COS7-Cell-Line-(Not-for-sale)

COS-7 is a cell line exhibiting fibroblast morphology that was derived from the CV-1 cell line (ATCC CCL-70) by transformation with an origin defective mutant of SV40 which codes for wild type T antigen. This is an African green monkey kidney fibroblast-like cell line suitable for transfection by vectors requiring expression of SV40 T antigen and can be used in toxicology research.

Specifications

Catalog Number	KC-1162
Cell Line Name	COS7-Cell-Line-(Not-for-sale)
Host Cell Line	NA
Description	African green monkey kidney fibroblasts, derived from the CV-1 cell line by transformation with an origin defective mutant of SV40 which codes for wild type T antigen
Quantity	One vial of frozen cells (≥2-10⁶/vial)
Stability	Stable in culture over a minimum of 10 passages
Application	3D cell culture; Cancer research
Freezing Medium	70% DMEM+20% FBS+10% DMSO
Propagation Medium	DMEM+10%FBS
Selection Marker	NA
Morphology	Fibroblast
Subculture	Split saturated culture 1:3-1:6 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 34 hours
Mycoplasma Status	Negative
In Vivo Validation	NA

Cell Line Generation

Characterization

Cell Resuscitation

1. Prewarm culture medium (DMEM + 10% FBS)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 1:3-1:6 every 2-3 days; seed out at about 1-3 × 10⁵ cells/mL.

Cell Freezing

1. Prepare the freezing medium (70% DMEM + 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. Authentication of African green monkey cell lines using human short tandem repeat markers. BMC Biotechnol. 11:102.1-102.10(2011)
2. Identification of various cell culture models for the study of Zika virus. World J. Virol. 7:10-20(2018)

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.