PMID- 7961021 OWN - NLM STAT- MEDLINE DCOM- 19941223 LR - 20190708 IS - 0360-3016 (Print) IS - 0360-3016 (Linking) VI - 30 IP - 5 DP - 1994 Dec 1 TI - Prediction of human cell radiosensitivity: comparison of clonogenic assay with chromosome aberrations scored using premature chromosome condensation with fluorescence in situ hybridization. PG - 1127-32 AB - PURPOSE: The purpose of the present investigation was to determine whether chromosome aberrations scored by premature chromosome condensation (PCC) and fluorescence in situ hybridization (FISH) can predict the radiosensitivity of human cell lines, thereby providing a possible means of assessing the in situ radiosensitivity of normal tissues and the radiocurability of individual human cancers. METHODS AND MATERIALS: We used four cells lines of different radiosensitivity: normal human fibroblasts (AG1522), ataxia-telangiectasia fibroblasts (AT2052), a human fibrosarcoma cell line (HT1080), and a human melanoma cell line (melanoma 903). These were irradiated in plateau phase with a range of doses and assessed both for clonogenic cell survival and for aberrations in a single chromosome (number 4) immediately after, and 24 h after irradiation. RESULTS: The initial number of breaks in chromosome 4 was proportional to irradiation dose and was identical for all the different human cell lines, irrespective of radiosensitivity. On the other hand, the number of chromosome 4 breaks remaining 24 h after irradiation reflected the radiosensitivity of the cells such that the relationship between residual chromosome aberrations and cell survival was the same for the different cell lines. CONCLUSIONS: These results suggest that the scoring of chromosome aberrations in interphase using FISH with PCC holds considerable promise for predicting the radiosensitivity of normal and tumor tissues in situ. FAU - Sasai, K AU - Sasai K AD - Department of Radiation Oncology, Stanford University School of Medicine, CA 94305-5468. FAU - Evans, J W AU - Evans JW FAU - Kovacs, M S AU - Kovacs MS FAU - Brown, J M AU - Brown JM LA - eng GR - R01 CA 55801/CA/NCI NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Int J Radiat Oncol Biol Phys JT - International journal of radiation oncology, biology, physics JID - 7603616 SB - IM MH - Ataxia Telangiectasia MH - Cell Line MH - Cell Survival/radiation effects MH - *Chromosome Aberrations MH - Chromosomes, Human/*radiation effects MH - Chromosomes, Human, Pair 4 MH - Colony-Forming Units Assay MH - Dose-Response Relationship, Radiation MH - Fibroblasts/radiation effects MH - HeLa Cells MH - Humans MH - In Situ Hybridization, Fluorescence MH - Tumor Cells, Cultured EDAT- 1994/12/01 00:00 MHDA- 1994/12/01 00:01 CRDT- 1994/12/01 00:00 PHST- 1994/12/01 00:00 [pubmed] PHST- 1994/12/01 00:01 [medline] PHST- 1994/12/01 00:00 [entrez] AID - 0360-3016(94)90319-0 [pii] AID - 10.1016/0360-3016(94)90319-0 [doi] PST - ppublish SO - Int J Radiat Oncol Biol Phys. 1994 Dec 1;30(5):1127-32. doi: 10.1016/0360-3016(94)90319-0.