Telomestatin
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Pin(84R)-65,75-Dimethyl-84,85-dihydro-1(2,4),2,3,4,5,6,7(4,2)-heptakis([1,3]oxazolo)-8(2,4)-[1,3]thiazolocyclooctaphane

Telomestatin is a macrocyclic chemical compound that acts by inhibiting the telomerase activity of in vitro cancer cells.[1] It was first isolated from the bacteria Streptomyces anulatus.[1] Telomestatin induces the formation of basket-type G-quadruplex (G4) structures from hybrid-type G-quadruplexes in the telomeric region. Upon formation of G4 structure there will be a decrease in the activity of the telomerase, which is involved in the replication of the telomeres and as a result the cell dies due to Hayflick type senescence.[citation needed]

References

  1. ^ Shin-ya, Kazuo; Wierzba, Konstanty; Matsuo, Ken-ichi; Ohtani, Toshio; Yamada, Yuji; Furihata, Kazuo; Hayakawa, Yoichi; Seto, Haruo (2001). "Telomestatin, a novel telomerase inhibitor from Streptomyces anulatus". Journal of the American Chemical Society. 123 (6): 1262–1263. Bibcode:2001JAChS.123.1262S. doi:10.1021/ja005780q. PMID 11456694