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The clonogenic assay with human tumor xenografts: evaluation, predictive value and application for drug screening.
- Source :
-
Annals of oncology : official journal of the European Society for Medical Oncology [Ann Oncol] 1990 Sep; Vol. 1 (5), pp. 333-41. - Publication Year :
- 1990
-
Abstract
- The feasibility, evaluation and predictive value of the colony-forming assay with human tumor xenografts for screening anticancer drugs have been studied. Using human tumors grown in serial passage in nude mice, adequate colony formation was observed in 215 of 251 (86%) different solid human tumors of various histologies. Based on in vitro growth characteristics, a quality-controlled assay protocol was developed. With the proposed criteria for standardized evaluation of individual experiments a substantial increase in assay reliability was achieved. The five clinically established agents, cisplatin, doxorubicin, etoposide, mitomycin-C and vindesine, were studied for anticancer activity in the clonogenic assay. Drugs were applied over a wide dose range by continuous exposure, yielding clear dose-response effects with coefficients of correlation between r = 0.946 and 0.995. Relevant dose levels predicting correctly for the clinical efficacy of the agents were determined by comparison of in vitro anticancer activity to in vitro toxicity on human bone marrow as follows: cisplatin 0.1 micrograms/ml, doxorubicin 0.01 micrograms/ml, etoposide 0.1 micrograms/ml, mitomycin-C 0.005 micrograms/ml, vindesine 0.01 micrograms/ml. At these concentrations, clinically sensitive tumor types showed inhibition of colony formation in 99 of 240 cases (41%), whereas 11% (19/176) of clinically resistant tumors were responsive. The relevant dose levels used equal between 0.3% and 4.0% of the achievable peak plasma concentrations in man. The predictive value of the clonogenic assay was determined by treatment of the same tumors in vitro and in vivo in tumor-bearing nude mice. In 174/220 comparisons (79%), in vitro data predicted correctly for the in vivo sensitivity of the xenografted malignancies.(ABSTRACT TRUNCATED AT 250 WORDS)
- Subjects :
- Animals
Bone Marrow drug effects
Cells, Cultured
Dose-Response Relationship, Drug
Feasibility Studies
Female
Humans
Mice
Mice, Nude
Neoplasm Transplantation
Predictive Value of Tests
Quality Control
Reproducibility of Results
Transplantation, Heterologous
Antineoplastic Agents therapeutic use
Drug Screening Assays, Antitumor methods
Neoplasms drug therapy
Tumor Stem Cell Assay
Subjects
Details
- Language :
- English
- ISSN :
- 0923-7534
- Volume :
- 1
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- Annals of oncology : official journal of the European Society for Medical Oncology
- Publication Type :
- Academic Journal
- Accession number :
- 2261375
- Full Text :
- https://doi.org/10.1093/oxfordjournals.annonc.a057770