Israel’s BioSight has developed the amino acid astrabine which acts as a “Trojan Horse” chemotherapy treatment that kills leukemia cells without harming healthy tissue. Astrabine closely resembles a protein called aspargine that leukemia cells depend on and the cancer cells are fooled into self-destruction.

http://www.timesofisrael.com/israeli-start-up-uses-trojan-horse-technology-to-kill-cancer-cells/