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Updated: Aug 12, 2026
Quantitative High-throughput Single-cell Cytotoxicity Assay For T Cells
Published on: February 2, 2013
Sequential cytotoxicity: a theory evaluated using novel 2-[4-(3-aryl-2-propenoyloxy)phenylmethylene]cyclohexanones
J R Dimmock1, N M Kandepu, A J Nazarali
1College of Pharmacy and Nutrition and Departments of Biochemistry and Chemistry, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5C9, Canada. dimmock@skyway.usask.ca
Abstract:
Five series of novel compounds were synthesized in order to evaluate the theory of sequential cytotoxicity which seeks to exploit the view that various cancer cells are particularly susceptible to successive attacks by cytotoxic agents. The compounds prepared were various 2-[4-(3-aryl-2-propenoyloxy)phenylmethylene]cyclohexanone s 1 and the related Mannich bases 2. In addition the analogues 3-5 lacking an olefinic bond in the ester group were also synthesized, which were predicted to be less cytotoxic than the compounds of series 1 and 2. The atomic charges at the potential sites for interaction with cellular constituents were determined by molecular modeling calculations. The biodata obtained from murine and human neoplastic cells revealed that the predictions made regarding the viability of the theory were fulfilled in approximately two-thirds of the cases indicating that further investigation of this hypothesis is warranted. In addition, the significant potencies of some of the Mannich bases toward human tumor cell lines, in particular coupled to their selective toxicity toward human leukemic and colon cancer cells, confirms their usefulness in serving as lead molecules for further development. A preliminary investigation into the mode of action of representative compounds revealed their ability to induce apoptosis and inhibit the biosyntheses of ribonucleic acid and proteins.
Insights
Novel compounds were synthesized to test sequential cytotoxicity theory in cancer cells. Some Mannich bases showed significant potency and selective toxicity, warranting further development as potential anti-cancer agents.
Area of Science:
- Medicinal Chemistry
- Cancer Biology
- Computational Chemistry
Background:
- Cancer cells may be susceptible to sequential attacks by cytotoxic agents.
- Novel compounds were designed to investigate this sequential cytotoxicity theory.
- Understanding drug interactions with cellular components is crucial for developing effective cancer therapies.
Purpose of the Study:
- To synthesize and evaluate novel compounds based on the sequential cytotoxicity theory.
- To assess the cytotoxic effects of synthesized compounds against various cancer cell lines.
- To explore the potential of Mannich bases as lead molecules for anti-cancer drug development.
Main Methods:
- Synthesis of five series of novel compounds, including cyclohexanones and Mannich bases.
- Molecular modeling calculations to determine atomic charges at interaction sites.
- In vitro biological evaluation using murine and human neoplastic cells.
Main Results:
- The sequential cytotoxicity theory was supported in approximately two-thirds of the tested cases.
- Some Mannich bases demonstrated significant potency against human tumor cell lines.
- Selective toxicity was observed in human leukemic and colon cancer cells for certain Mannich bases.
- Compounds were found to induce apoptosis and inhibit RNA and protein biosynthesis.
Conclusions:
- The sequential cytotoxicity hypothesis warrants further investigation.
- Certain Mannich bases show promise as lead compounds for developing new anti-cancer drugs.
- The identified compounds exhibit anti-cancer properties through apoptosis induction and inhibition of essential biosynthetic pathways.
