Cocktail polysaccharides isolated from Ecklonia kurome against the SARS-CoV-2 infection. (1st January 2022)

• Record Type: Journal Article
• Authors: Zhang, Shihai; Pei, Rongjuan; Li, Meixia; Su, Haixia; Sun, Hao; Ding, Yaqi; Su, Minbo; Huang, Chunfan; Chen, Xia; Du, Zhenyun; Jin, Can; Zang, Yi; Li, Jia; Xu, Yechun; Chen, Xinwen; Zhang, Bo; Ding, Kan
• Is Part Of: Carbohydrate polymers. Volume 275(2022)
• Publication Date: 2022-01-01
• Subjects: Alginate -- Mannuronic acid -- Guluronic acid -- Heparan sulfate -- Fucan -- Sodium borohydride -- Dimethyl sulfoxide -- Deuterium oxide -- Acetone -- 1-Cyclo-hexyl-3-(2-mopholinoethyl) carbodiimidemetho-p-toluenesulfonate; COVID-19 -- SARS-CoV-2 -- Angiotensin converting enzyme 2 (ACE2) -- 3CL protease -- Ecklonia kurome Okam -- Polysaccharide; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2021.118779
• Languages: English
• ISSNs: 0144-8617

Abstract

Abstract: Previous researches suggested that polysaccharides from brown algae had anti-virus activity. We hypothesized that nature polysaccharide from marine plants might have the effect on anti-SARS-CoV-2 activity. By high throughput screening to target 3CLpro enzyme using polysaccharides library, we discover a crude polysaccharide 375 from seaweed Ecklonia kurome blocked 3CLpro enzymatic activity and shows good anti-SARS-CoV-2 infection activity in cell. Further, we show that homogeneous polysaccharide 37502 from the 375 may bind to 3CLpro well and disturb spike protein binding to ACE2 receptor. The structure characterization uncovers that 37502 is alginate. These results imply that the bioactivities of 375 on SARS-CoV-2 may target multiple key molecules implicated in the virus infection and replication. The above results suggest that 375 may be a potential drug candidate against SARS-CoV-2. Graphical abstract: Unlabelled Image