High-sensitivity antitumor drug sensitivity testing
| Autor: | Miyako Kawashima, Kimio Wada, Masaji Yamauchi, Yoshitaka Sato, Tatsuhei Kondo |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Drug
Cancer Research media_common.quotation_subject Cell Tetrazolium Salts Cell Count Absorbance chemistry.chemical_compound Bromide medicine Tumor Cells Cultured Humans MTT assay media_common Chromatography General Medicine Succinate Dehydrogenase Thiazoles medicine.anatomical_structure Oncology chemistry Biochemistry Sensitivity testing Xtt assay Indicators and Reagents Formazan Drug Screening Assays Antitumor |
| Zdroj: | Oncology. 51(6) |
| ISSN: | 0030-2414 |
| Popis: | For antitumor drug sensitivity testing we have been performing the succinic dehydrogenase inhibition test using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphe-nyltetrazolium bromide (MTT). A new tetrazolium salt 2,3-bis(2-methoxy-4-nitro-5-sulfophenyl)-5-[(phenyl-amino) carbonyl]-2H-tetrazolium hydroxide (XTT) has been synthesized recently, and we have been conducting basic studies using it. We were able to obtain a high degree of sensitivity by adding phenazine methosulfate as a promoter in this assay. In these assays, there was a positive correlation between absorbance and cell count and XTT assay was more sensitive than MTT assay. In XTT assay, the production of formazan increases with reaction time over a protracted period of time, we assessed the possibility of performing assays with fewer cells than MTT was used. The results using cancer cell lines showed that when reacted for a longer time (6 h), it was possible to perform adequate assays using this method with 5,000 cells per well, and it will be useful when the amount of biopsy specimen is limited. We also evaluated the inhibition index of each of the drugs, comparing it with the MTT assay. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|