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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
Inhibition of protein tyrosine phosphatase 1B by prenylated isoflavonoids isolated from the stem bark of Erythrina addisoniae
Planta Medica, Volume 72, No. 10, Year 2006
Notification
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Description
It has been suggested that protein tyrosine phosphatase IB (PTP1B) inhibitors might be a therapeutic target for the treatment of type 2 diabetes and obesity. A bioassay-guided phytochemical study of the EtOAc extract of the stem bark of Erythrina addisoniae (Leguminosae) resulted in the identification of a new PTP1B inhibitory compound, 5,2′4′-trihydroxy-6-(γ, γ-dimethylallyl)-2‴,2‴-dimethyldihydropyrano[5‴, 6‴]isoflavanone (6), along with five known prenylated isoflavonoids, orientanol E (1), senegalensin (2), warangalone (3), warangalone 4′-methyl ether (4) and 2,3-dihydroauriculatin (5). Compounds 1, 5 and 6 inhibited PTP1B with IC50 values ranging from 2.6 ± 0.5 to 10.1 ± 0.3 μM. Our results indicate that hydroxylation at both 2′- and 4′-positions in the B-ring and cyclization between a hydroxy group at C-7 and one of the prenyl groups at C-6 or C-8 in the A-ring may be important for activity. Thus, compounds 5 and 6 could be a new class of natural PTP1B inhibitors. © Georg Thieme Verlag KG Stuttgart.
Authors & Co-Authors
Bae, Eun Young
South Korea, Daejeon
Korea Research Institute of Bioscience and Biotechnology
Na, Minkyun
South Korea, Daejeon
Korea Research Institute of Bioscience and Biotechnology
Njamen, Dieudonné
Cameroon, Yaounde
Université de Yaoundé I
Mbafor, Joseph Tanyi
Cameroon, Yaounde
Université de Yaoundé I
Fomum, Zacharias Tanee
Cameroon, Yaounde
Université de Yaoundé I
Cui, Long
South Korea, Daejeon
Korea Research Institute of Bioscience and Biotechnology
Choung, Dong Ho
South Korea, Daejeon
Korea Research Institute of Bioscience and Biotechnology
Kim, Boyeon
South Korea, Daejeon
Korea Research Institute of Bioscience and Biotechnology
Oh, Won Keun
South Korea, Daejeon
Korea Research Institute of Bioscience and Biotechnology
Ahn, Jong Seog
South Korea, Daejeon
Korea Research Institute of Bioscience and Biotechnology
Statistics
Citations: 25
Authors: 10
Affiliations: 2
Identifiers
Doi:
10.1055/s-2006-946674
ISSN:
00320943
Research Areas
Noncommunicable Diseases