KC-5918

CHOK1-CRE-Luc2-TSHR-Mc4-Cell-Line

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Home » CHOK1-CRE-Luc2-TSHR-Mc4-Cell-Line

Background of CHOK1-CRE-Luc2-TSHR-Mc4-Cell-Line

The protein encoded by TSHR is a membrane protein and a major controller of thyroid cell metabolism. The encoded protein is a receptor for thyrothropin and thyrostimulin, and its activity is mediated by adenylate cyclase. The phenotype spectrum is wide: from severe congenital hypothyroidism to mild hyperthyrotropinemia. Over 250 TSHR variants have been published, many uncharacterized in vitro. TSHR is sulfated on tyrosines in a motif located downstream of the C-terminal cysteine cluster. Sulfation of one of the two tyrosines in the motif is mandatory for high-affinity binding of TSH and activation of the receptor. Site-directed mutagenesis experiments indicate that the motif, which is conserved in all members of the glycoprotein hormone receptor family, seems to play a similar role in the LH/CG and FSH receptors.

Specifications

Catalog NumberKC-5918
Cell Line NameCHOK1-CRE-Luc2-TSHR-Mc4-Cell-Line
Clone Number2A3
Host Cell LineCHOK1-CRE-Luc2
DescriptionStable CHOK1 cell line expressing exogenous luciferase gene under the control of TSHR signaling pathway
QuantityOne vial of frozen cells (≥2-106/vial)
StabilityStable in culture over a minimum of 10 passages
ApplicationDrug screening and biological assays
Freezing Medium70% RPMI1640+20% FBS+10% DMSO
Propagation MediumRPMI1640+10%FBS+5µg/mL Puromycin+375µg/mL Hygromycin B
Selection MarkerPuromycin | Hygromycin B
MorphologyEpithelial
SubcultureSplit saturated culture 1:4-1:5 every 2-3 days; seed out at about 1-3 × 105 cells/mL
Incubation37 °C with 5% CO2
StorageLiquid nitrogen immediately upon receiving
Doubling TimeApproximately 30 hours
Mycoplasma StatusNegative

Cell Line Generation

CHOK1-CRE-Luc2-TSHR-Mc4 Cell Line was generated using a lentiviral vector expressing TSHR sequence.

Characterization

Figure 1. CHOK1-CRE-Luc2-TSHR-Mc4 cell line was seed into the 96-well plate, and treated with TSH at a maximum concentration 1000 ng/mL diluted 3.16-fold for 16 hours, then readout with Bright-Glo system.

Figure 2. CHOK1-CRE-Luc2-TSHR-Mc4 cell line was seed into the 96-well plate, and treated with M22-hIgG1 at a maximum concentration 20µg/mL diluted 3.16-fold for 16 hours, then readout with Bright-Glo system.

Figure 3. CHOK1-CRE-Luc2-TSHR-Mc4 cell line was seed into the 96-well plate, and treated with K170-hIgG1 and IgG1 at a maximum concentration 20µg/mL diluted 3.16-fold for 1 hour, and then TSH treatment in the concentrations of 10000 ng/mL for 16 hours, then readout with Bright-Glo system.

Figure 4. CHOK1-CRE-Luc2-TSHR-Mc4 cell line was seed into the 96-well plate, and treated with K170-hIgG1 and IgG1 at a maximum concentration 20µg/mL diluted 3.16-fold for 1 hour, and then M22-hIgG1 treatment in the concentration of 2 µg/mL for 16 hours, then readout with Bright-Glo system.

Cell Resuscitation

1. Prewarm culture medium (RPMI1640 supplemented with 10% FBS, 375µg/mL Hygromycin and 5µg/mL Puromycin)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 1:4-1:5 every 2-3 days; seed out at about 1-3 × 105 cells/mL.

Cell Freezing

1. Prepare the freezing medium (70% RPMI1640 + 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. Yeste D, Baz-Redón N, Antolín M, Garcia-Arumí E, Mogas E, Campos-Martorell A, González-Llorens N, Aguilar-Riera C, Soler-Colomer L, Clemente M, Fernández-Cancio M, Camats-Tarruella N. Genetic and Functional Studies of Patients with Thyroid Dyshormonogenesis and Defects in the TSH Receptor (TSHR). Int J Mol Sci. 2024 Sep 18;25(18):10032. doi: 10.3390/ijms251810032. PMID: 39337518; PMCID: PMC11432690.
2. Costagliola S, Panneels V, Bonomi M, Koch J, Many MC, Smits G, Vassart G. Tyrosine sulfation is required for agonist recognition by glycoprotein hormone receptors. EMBO J. 2002 Feb 15;21(4):504-13. doi: 10.1093/emboj/21.4.504. PMID: 11847099; PMCID: PMC125869.

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.
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