* Luciferase Reporter-Jurkat Cell Line

The CD27/NF-kB Leeporterâ„¢ Luciferase Reporter cell line is a stably transfected Jurkat cell line which expresses full-length human CD27 along with the Renilla luciferase reporter gene under the transcriptional control of the NF-kB response element. CD27 is a tumor necrosis factor (TNF) receptor superfamily member found on T cells, B cells and NK cells. It binds to its ligand, CD70, which is present on activated lymphocytes and dendritic cells, triggering a co-stimulatory signal that facilitates T cell activation, survival and proliferation. Targeting the CD27/CD70 pathway has emerged as a promising therapeutic approach for treating both innate and adaptive immune disorders, as well as cancer.

Functional Assay

Each vial contains 2 ~ 3 x 10^6 cells in 1 ml of 90% FBS + 10% DMSO.

Dry Ice

Immediately upon receipt, store in liquid nitrogen.

Application: Monitor the T cell co-stimulatory signaling pathway activity. Screen for activators or inhibitors of the CD27/CD70 signaling pathway. Culture conditions: Cells should be grown at 37oC with 5% CO2 using RPMI medium supplemented with 10% heat-inactivated FBS, 1 mM sodium pyruvate, 10 mM HEPES and 1% Pen/Strep plus 3 μg/ml of Puromycin and 10 μg/ml Blasticidin (Note: Puromycin and Blasticidin can be omitted during the reporter cell assays) . It is recommended to quickly thaw the frozen cells upon receipt or from liquid nitrogen in a 37oC water-bath, transfer to a tube containing 10 ml of growth medium without Puromycin, spin down cells, resuspend cells in pre-warmed growth medium without Puromycin and Blasticidin, transfer resuspended cells to T25 flask and culture in 37oC-CO2 incubator. Monitor the cell viability by counting cells daily for 1~3 days until cells completely recover viability as cells are doubling daily. Once cells are over 90% confluent, harvest cells by centrifugation and passage cells. At first passage, switch to growth medium containing Puromycin and Blasticidin. Cells should be split before they reach complete confluence. To passage the cells, transfer cells to a tube, spin down cells, resuspend cells and seed appropriate aliquots of cell suspension into new culture vessels. Subcultivation ration = 1:10 to 1:20 weekly. To achieve satisfactory results, cells should not be passaged over 16 times. Functional validation: A. Activation of CD27 signaling pathway via co-stimulation with CD70 stably expressed in the CD70/CHO-K1 stable cell line. 1. Harvest CD70/CHO-K1 cells (Abeomics, Cat. No. 14-543ACL) and seed cells into a white solid-bottom 96-well microplate in 100 μl of DMEM growth medium at different number of cells (i.e. 2-fold serial dilutions starting from 1 x 10^5 cells/well) . 2. Next day, remove the medium, and add CD27/NF-kB Leeporterâ„¢ - Jurkat cells in 100 μl of RPMI growth medium at 2 x 10^4 cells/well. 3. Incubate cells at 37oC in a CO2 incubator for 6 hours. 4. After 6 hours, equilibrate the plate to room temperature for 10 minutes. 5. Add 50 μl of luciferase assay reagent (Abeomics, Cat #17-1101; Refer to the reagent datasheet for the detailed luciferase assay protocol) per well. 6. Read the plate in 1-5 minutes to measure luminescence using a microplate luminometer. B. Activation of CD27 signaling pathway via co-stimulation with CD70 naturally expressed in Raji cells. 1. Harvest Raji cells and seed cells into a white solid-bottom 96-well microplate in 50 μl of RPMI growth medium at different number of cells (i.e. 2-fold serial dilutions starting from 1 x 10^5 cells/well) . 2. Harvest CD27/NF-kB Leeporterâ„¢ - Jurkat cells and add cells to the plate containing Raji cells in 50 μl of RPMI growth medium at 2 x 10^4 cells/well. 3. Incubate cells at 37oC in a CO2 incubator for 6 hours. 4. After 6 hours, equilibrate the plate to room temperature for 10 minutes. 5. Add 50 μl of luciferase assay reagent (Abeomics, Cat #17-1101; Refer to the reagent datasheet for the detailed luciferase assay protocol) per well. 6. Read the plate in 1-5 minutes to measure luminescence using a microplate luminometer. LIMITED USE RESTRICTIONS: THIS PRODUCT IS SOLELY FOR IN VITRO RESEARCH USE ONLY. NOT FOR DIAGNOSTIC OR THERAPEUTIC USE. By use of this product, user agrees to be bound by the terms of this limited use statement. This product is solely for Internal Research Purposes and not for Commercial Purposes. Commercial Purposes include, but are not limited to (1) use of the cell line in manufacturing; (2) use of the cell line to provide a service, information or data; (3) use of the cell line for therapeutic, diagnostic or prophylactic purposes; or (4) resale of the cell line whether or not such cell lines are resold for use in research. The buyer cannot sell, give or otherwise transfer this product to a third party. Commercial License Agreement is available for non-research use if applicable. Please contact Abeomics (info@abeomics.com) .