KC-2268

293T-CLDN3-Cell-Line

23722

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Background of 293T-CLDN3-Cell-Line

CLDN3, also known as claudin-3, is a transmembrane protein belonging to claudin family, which is essential for the formation and maintenance of epithelial tight junctions. Abnormal expression of claudin-3 may lead to structural and functional damage of tight junctions, which plays an important part in tumorigenesis and cancer progression.

Specifications

Catalog Number	KC-2268
Cell Line Name	293T-CLDN3-Cell-Line
Host Cell Line	Human HEK293T cell line
Description	Stable HEK293T cell line expressing exogenous human CLDN3 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% DMEM+20% FBS+10% DMSO
Propagation Medium	DMEM+10%FBS+1μg/mL Puromycin
Selection Marker	Puromycin
Morphology	Epithelial
Subculture	Split saturated culture 1:3-1:6 every 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

293T human CLDN3 cell line was generated using a lentiviral vector expressing the human CLDN3 sequence.

Characterization

Cell Resuscitation

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

Cell Freezing

Prepare the freezing medium (70% DMEM + 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

N V Danilova , K A Anikina & N A Oleynikova. Claudin-3 expression in gastric cancer. Arkh Patol. 2020;82(2):5- 11.doi: 10.17116/patol2020820215.
Kosuke Yamaga. Claudin-3 Loss Causes Leakage of Sweat from the Sweat Gland to Contribute to the Pathogenesis of Atopic Dermatitis. J Invest Dermatol. 2018 Jun;138(6):1279-1287.

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.