New ganglioside analogs that inhibit influenza virus sialidase.

Abstract:

:Synthetic thioglycoside-analogs of gangliosides such as Neu5Ac alpha(2-S-6)Glc beta(1-1)Ceramide (1) and the GM3 analog Neu5Ac alpha(2-S-6)Gal beta(1-4)Glc beta(1-1)Ceramide (2), competitively inhibited GM3 hydrolysis by the sialidase of different subtypes of human and animal influenza viruses with an apparent Ki value of 2.8 x 10(-6) and 1.5 x 10(-5) M, respectively. The inhibitory activity of the ganglioside GM4 analog [Neu5Ac alpha(2-S-6)Gal beta(1-1)Ceramide (3)], in which the glucose of 1 was substituted by galactose, was lower than that of 1 (Ki = 1.0 x 10(-4) M). The thioglycoside-analogs (1, 2, 3) of the gangliosides were non-hydrolyzable substrates for influenza virus sialidase. The inhibitory activity of 1 to bacterial sialidases from Clostridium perfringens and Arthrobacter ureafaciens was considerably lower than that to influenza virus sialidase, indicating that the structure of the active site in bacterial and influenza virus sialidase may be different and the analogs may be useful to determine the orientation of the substrate to the active site of sialidases, especially of influenza viruses.

journal_name

Glycoconj J

journal_title

Glycoconjugate journal

authors

Suzuki Y,Sato K,Kiso M,Hasegawa A

doi

10.1007/BF01073378

subject

Has Abstract

pub_date

1990-01-01 00:00:00

pages

349-54

issue

4

eissn

0282-0080

issn

1573-4986

journal_volume

7

pub_type

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