PMID- 2850959 OWN - NLM STAT- MEDLINE DCOM- 19890309 LR - 20190813 IS - 0303-7207 (Print) IS - 0303-7207 (Linking) VI - 60 IP - 2-3 DP - 1988 Dec TI - Retention of cyclic AMP response to TSH in a cloned human thyrocyte/T cell hybridoma (HY2-15). PG - 233-8 AB - Our observation of a human T cell leukemia cell (Molt 4) demonstrating low affinity thyroid-stimulating hormone (TSH) responses, as evidenced by generation of cyclic AMP, led us to test Molt 4 cells as a suitable partner for immortalizing high affinity TSH receptors present on human thyroid cells. Therefore, we generated a hybridoma (HY2-15) by a fusion between thyroid monolayer cells from a patient with Graves' disease, and a hypoxanthine-aminopterin-thymidine (HAT)-sensitive variant of this human T cell leukemia line, Molt 4-8AGR. The hybrid nature of HY2-15 was confirmed by DNA histograms using propidium iodide and flow cytometry. Karyotyping showed the HY2-15 cells to have five sets of chromosomes and human leukocyte antigen (HLA) class I determination revealed the presence of an additional HLA class I antigen (A2) not present on the Molt 4 partner cells. The established, cloned, hybridoma cells showed a greater than 30-fold increase in cyclic AMP release after stimulation with bovine TSH (bTSH, 1 mU/ml) with a minimum detectable stimulating dose of less than 10 microU/ml bTSH. However, no other thyroid-specific functions could be detected. Furthermore, HY2-15 cells failed to express HLA class II antigens either constitutively or in response to recombinant human gamma interferon (IF) and a variety of other stimuli, data similar to the Molt 4 partner cells but in contrast to human thyroid cells which show high sensitivity to gamma IF. The preservation of highly sensitive TSH responsiveness in a proliferating cell offers a unique approach to the study of human TSH receptor function. FAU - Martin, A AU - Martin A AD - Department of Medicine, Mount Sinai School of Medicine, New York, NY. FAU - Platzer, M AU - Platzer M FAU - Davies, T F AU - Davies TF LA - eng GR - DK28242/DK/NIDDK NIH HHS/United States GR - DK35764/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - Ireland TA - Mol Cell Endocrinol JT - Molecular and cellular endocrinology JID - 7500844 RN - 0 (HLA Antigens) RN - 0 (Receptors, Thyrotropin) RN - 0 (Recombinant Proteins) RN - 82115-62-6 (Interferon-gamma) RN - 9002-71-5 (Thyrotropin) RN - E0399OZS9N (Cyclic AMP) SB - IM MH - Cell Division MH - Clone Cells MH - Cyclic AMP/*biosynthesis MH - Dose-Response Relationship, Drug MH - Graves Disease MH - HLA Antigens/analysis/genetics MH - Humans MH - Hybridomas/*metabolism MH - Interferon-gamma/pharmacology MH - Karyotyping MH - Leukemia, T-Cell/*metabolism MH - Phenotype MH - Receptors, Thyrotropin/physiology MH - Recombinant Proteins MH - Thyrotropin/*pharmacology MH - Tumor Cells, Cultured EDAT- 1988/12/01 00:00 MHDA- 1988/12/01 00:01 CRDT- 1988/12/01 00:00 PHST- 1988/12/01 00:00 [pubmed] PHST- 1988/12/01 00:01 [medline] PHST- 1988/12/01 00:00 [entrez] AID - 10.1016/0303-7207(88)90183-9 [doi] PST - ppublish SO - Mol Cell Endocrinol. 1988 Dec;60(2-3):233-8. doi: 10.1016/0303-7207(88)90183-9.