Catechin from Burkea africana Hook. Exhibits in vitro inhibition of human telomerase activity. Issue 24 (17th December 2021)

• Record Type: Journal Article
• Authors: Eboji, Okwuchukwu Kodichinma; Borges, Gustavo; Harrington, Lea; Lin, Wenhan; Sofidiya, Margaret Oluwatoyin; Sowemimo, Abimbola Adepeju
• Is Part Of: Natural product research. Volume 35:Issue 24(2021)
• Page Start: 6175
• Page End: 6179
• Publication Date: 2021-12-17
• Subjects: Burkea africana -- catechin -- telomeres -- telomerase inhibition; Natural products -- Periodicals; Natural products -- Research -- Periodicals; Biological Factors -- Periodicals; Biological Products -- Periodicals; 547
• DOI: 10.1080/14786419.2020.1831497
• Languages: English
• ISSNs: 1478-6419

Abstract

Abstract: There has been an increasing interest in natural products with the ability to inhibit telomerase activity in tumour and cancerous cells. Green tea catechins have been reported previously to inhibit telomerase, but it was unknown whether catechins from other plant sources could exhibit this property. We isolated 2-(3, 4-dihydroxyphenyl)-3, 4-dihydro-2H-chromene-3, 5, 7-triol (catechin without the presence of a galloyl unit) from the stem bark of B. africana, and tested its ability to inhibit recombinant, partially purified telomerase produced in rabbit reticulocyte lysates. The B. africana catechin inhibited the telomere extension activity of telomerase with an IC50 of approximately 4.7 µg/ml. This finding indicates that the galloyl unit may not be solely responsible for the inhibition of telomerase activity by catechins. This is the first report of the telomerase-inhibiting potential of catechin from the stem bark of B. africana. Graphical Abstract: UF0001