KC-1392

CHOK1-SIGLEC10-Cell-Line

22049

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Background of CHOK1-SIGLEC10-Cell-Line

Siglec-10，abbreviated as sialic acid binding Ig-like lectins-10, is I-type lectins that belong to the immunoglobulin superfamily, and expressed on eosinophils, neutrophils, monocytes, and B cell. Siglec-10 is a ligand for CD52, the target of the therapeutic monoclonal antibody Alemtuzumab, and is also reported to bind to the co-stimulatory molecule CD24.

Specifications

Catalog Number	KC-1392
Cell Line Name	CHOK1-SIGLEC10-Cell-Line
Host Cell Line	Chinese hamster ovary CHO-K1 cell line
Description	CHOK1 cell line stable expressing exogenous human siglec10 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+5µg/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 siglec10 cell line was generated using lentiviral vector expressing human siglec10 sequence.

Characterization

Cell Resuscitation

Prewarm culture medium (F12K + 10% FBS + 5µg/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% 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

Munday, J, S Kerr, J Ni, A L Cornish, J Q Zhang, G Nicoll, H Floyd, et al. 2001. ¡ùIdentification, Characterization and Leucocyte Expression of Siglec-10, a Novel Human Sialic Acid-Binding Receptor.¡ì Biochemical Journal 355 (Pt 2): 489Ã¿97. doi:10.1042/0264-6021:3550489.
Li, N, W Zhang, T Wan, J Zhang, T Chen, Y Yu, J Wang, and X Cao. 2001. ¡ùCloning and Characterization of Siglec10, a Novel Sialic Acid Binding Member of the Ig Superfamily, From Human Dendritic Cells.¡ì Journal of Biological Chemistry 276 (30). American Society for Biochemistry and Molecular Biology: 28106Ã¿12. doi:10.1074/jbc.M100467200.
Barkal, Amira A, Rachel E Brewer, Maxim Markovic, Mark Kowarsky, Sammy A Barkal, Balyn W Zaro, Venkatesh Krishnan, et al. 2019. ¡ùCD24 Signalling Through Macrophage Siglec-10 Is a Target for Cancer Immunotherapy.¡ì Nature 572 (7769). Nature Publishing Group: 392Ã¿96. doi:10.1038/s41586-019-1456-0.