KC-6647

Ramos-mIgE-short-CH3-CH4-Luc2 Cell Line

64723

Background of Ramos-mIgE-short-CH3-CH4-Luc2 Cell Line

IgE aliases is IGHE. IGHE (Immunoglobulin Heavy Constant Epsilon) is a Protein Coding gene.Enables immunoglobulin receptor binding activity. Involved in several processes, including B cell mediated immunity; Fc receptor-mediated immune complex endocytosis; and leukocyte degranulation. Located in extracellular space and plasma membrane. Part of IgE B cell receptor complex.Luciferase is an oxidative enzyme that can produce bioluminescence with addition of luciferin, but doesn’t need an external light source unlike fluorescent proteins. Photo emission can be detected directly by light sensitive devices. Such as luminometers or modified microscopes. Luciferase is widely used in many fields of biological research, such as transcriptional activity, kinase or other enzyme activity, cellular ATP level, and whole animal imaging.

Specifications

Catalog Number	KC-6647
Cell Line Name	Ramos-mIgE-short-CH3-CH4-Luc2 Cell Line
Clone Number	1#
Host Cell Line	Ramos
Description	Ramos cell line stably expressing exogenous mIgE-short-CH3-CH4 and Luciferase 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+1μg/mL Puromycin+150μg/mL Hygromycin B
Selection Marker	Puromycin \| Hygromycin B
Morphology	Suspension
Subculture	Split saturated culture 1:4-1:6 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 30 hours
Mycoplasma Status	Negative

Cell Line Generation

Ramos-mIgE-short-CH3-CH4-Luc2 cell line was generated using a lentiviral vector expressing the mIgE-short-CH3-CH4 and Luciferase sequence.

Characterization

Figure1: Characterization of IgE overexpressing in Ramos-mIgE-short-CH3-CH4-Luc2 stable clones using FACS.

Figure2: Characterization of the Ramos-mIgE-short-CH3-CH4-Luc2 cell line stable clone using Bright-Lite Luciferase Assay System in the conditions of different cell number.

Cell Resuscitation

Prewarm culture medium (RPMI1640+10%FBS+1μg/mL Puromycin+150μg/mL Hygromycin B) 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 1:4-1:6 every 2-3 days; seed out at about 1-3 × 10⁵ cells/mL.

Cell Freezing

Prepare the freezing medium (70% RPMI1640 + 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

Dehlink E, Baker AH, Yen E, Nurko S, Fiebiger E. Relationships between levels of serum IgE, cell-bound IgE, and IgE-receptors on peripheral blood cells in a pediatric population. PLoS One. 2010 Aug 16;5(8):e12204. doi: 10.1371/journal.pone.0012204. PMID: 20808937; PMCID: PMC2922369.
Greer LF, Szalay AA (2002). "Imaging of light emission from the expression of luciferases in living cells and organisms: a review". Luminescence. 17 (1): 43–74. doi:10.1002/bio.676. PMID 11816060.

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.