Related Experiment Video
Updated: Aug 14, 2026

09:19
Evaluating the Effectiveness of Cancer Drug Sensitization In Vitro and In Vivo
Published on: February 6, 2015
Effect of peptichemio exposure on DNA synthesis in a mammalian cell system in vitro
Tumori
|September 1, 1975
Abstract:
The effect of Peptichemio (PTC) on the survival and DNA synthesis in mouse L-cells was studied. Experimental data show that a typical dose-survival curve is obtained when L-cells are cultivated in the presence of PTC. Exposure of L-cells to various concentrations of PTC caused an inhibition in cellular ability to synthesize DNA which is evidenced by the decreased incorporation of 3H-thymidine. This inhibition is dependent on the concentration of PTC and the time of exposure.
Related Concept Videos
DNA Damage can Stall the Cell Cycle
In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
Mutagenicity and Carcinogenicity
Mutagenicity and carcinogenicity refer to the ability of drugs to cause genetic defects and induce cancer, respectively. The International Agency for Research on Cancer (IARC) classifies agents into four groups based on their carcinogenic potential. Group 1 agents are known human carcinogens; group 2A agents are probably carcinogenic to humans; group 3 agents lack data to support their role in carcinogenesis; and group 4 includes agents for which data support that they are not likely to be...

